Two Boss Infected Ideas

[DeliriumWartner]

Hey guys.

I'm a newbie here but I'm obviously a massive fan of L4D. During a bout of insomnia two ideas for new boss infected popped into my head. I thought I'd share them with you and see if anyone else thinks they're cool.

Please note, these are just ideas - details are usually vague on purpose, as balance can be quite a difficult thing to get right.

The Rooter

Description - A thin fragile-looking body with over-large, bare hands and feet. His head is bulbous and taken up mainly with two faintly glowing blue eyes. He is generally silent though emits a hissing noise when he spots his prey. The Rooter can crawl along walls and ceilings at 2/3rds walking pace. The health of this Boss is the lowest of all, forcing the player to keep his distance.

Powers - The primary attack of the Rooter is one which, unlike other Boss Zombies, does not afflict damage. The Rooter must have a direct line of sight with the victim, at least 50% of his body, to attack, although his range is greater than any other Special Infected. When activated, the attack causes tendrils to crawl out of the ground, lashing themselves to the feet of the victim, rendering him immobile after a few seconds.

As mentioned, the power does not cause damage, but neither can it be dispelled by bashing the victim as with the Smoker. The only way to break the attack is to damage the Rooter, freeing the victim.

Tactical Advantages - The Rooter is designed almost entirely as a support unit. The lack of damage is countered by the usefulness of the unit in support of a boomer or tank attack, although there are other applications such as outside lifts or prior to rescue.

Note: It has been suggested that rooting the victim is over-powered, especially during tank attacks. A possible alternative is slowing the victim, rather than stopping him outright.


The Host

Description - This Boss Infected looks similar to a standard infected, except it has worm-like tentacles spotted around its body, with larger ones sprouting from its back. It is designed to blend in with zombie hordes, using them to get close to the Survivors. When approaching there is a sort of crawlie insect sound, which intensifies during attack.

Powers - The primary attack of the Host is one of potential. The host must attack from behind the victim, hence his camoflaged nature. The attack takes a few moments to complete, during which time a parasite, one of the Hosts many, is transferred into the victims body.

The victim will be aware of his condition, perhaps by wriggling worm-like images to the sides of his vision. He will then have a set amount of time to "cure" himself, purging the parasite, before he detonates in a bloody explosion. A first-aid kit will purge the threat, and pills will reset the timer on the attack. The imminent explosion will be obvious to the victim as his screen becomes increasingly covered by the writhing worms as well as his vision dimming/reddening.

Tactical Advantages: The Host is another tactically played Boss Zombie. To a well-organised and competant team, he will be little threat. To most it will mean keeping aside one more first aid kit, just in case. However, to slow teams or on the longer maps, the Host will become more and more of a danger, forcing difficult decisions upon the Survivors. Also, bloody explosions are cool.

Thanks, and let me know your opinions. The earlier competitions proved there are some fantastic artists out there, so if my ideas spark any inspirations, please feel free to explore their designs graphically.

Del

[Obama Yo Momma]

The Rooter
http://img.photobucket.com/albums/v328/big_dog1893/roto-rooter.jpg

Does he do plumbing or?

[DeliriumWartner]

Does he do plumbing or?
Oh God. I knew the name wasn't ideal but I couldn't think of anything else. Hell, maybe it's that guy after he gets infected :P

[binge]

Host is OP

Try to find a med kit in the subways of no mercy or on the first level of blood harvest

[DeliriumWartner]

Host is OP

Try to find a med kit in the subways of no mercy or on the first level of blood harvest

Suppose the explosion timer is 2 minutes? That'd make most levels reasonable while still making the Host a viable threat during finales or extended action areas that some maps have.

I think there'd be a sweet spot somewhere, short enough to be effective, long enough to allow time to seek out a medkit.

[XViper1534]

binge what does OP mean?

[XViper1534]

BTW great ideas, I sort of tried to think of some ideas, not as good as this.

[G_X]

[moments after a single successful attack by the Host, the victim] detonates in a bloody explosion. A first-aid kit will purge the threat, and pills will reset the timer on the attack
That's like a more mobile, more broken, more annoying version of the Witch.

[munkeybanana]

When the survivor is trapped by the feet he should be able to see the glint of the rooters glowing eyes so he can alert survivors of its whereabouts.

[DeliriumWartner]

Quoting: DeliriumWartner
[moments after a single successful attack by the Host, the victim] detonates in a bloody explosion. A first-aid kit will purge the threat, and pills will reset the timer on the attack

That's like a more mobile, more broken, more annoying version of the Witch.


I didn't say moments, I left the timer deliberately vague. 2 minutes, with panic setting in as the Survivor slowly gets closer to his demise and starts desperately trying to forge ahead towards to promise of safety in the Safe room is hardly "moments".

Apart from that, I don't really see how it's anything like the Witch. The Witch is an obvious threat, placed so that you can either attack and hope to survive or carefully avoid it. The Host is a sly saboteur, planting a bomb and watching the victim desperately try to defuse it.

[XViper1534]

Here's an idea!

The Spiker

Description: A zombie, medium height, who seems to have been in a car accident, stabbed through the body by long pipes. Shaved head, alot of scars on the face, over one eye. His left arm is short and stops before the elbow. It makes a dark moaning sound as it walks, and when it sees a target it makes a slight screaming sound.

Attacks: It has to aim at a survivor, and once it has the target it grabs a pipe from its body. (It shows it in his hand, also when you play as him). Then it takes 2 seconds to cock back fully Hold R (for PC whatever button you press to attack), then let go. If it was fully cocked back it goes in a straigt lin to its target. If it hits one of the survivors, the pipe goes through the body and nails him to the ground (Nothing a medkit can't fix), and the other survivors have to pick him up as if he was down, or fell. It does 50 damage if hit, and can kill the person if not helped up, although if the person doesn't use a medkit, he has 50 health that drops until then, but faster than usual (not too fast though). It only can throw 3 pipes, even if it misses, and it starts losing health after the three pipes were thrown.
2nd Attack: It just smacks with L ( or PC button) and does 10 damage (good reason why). Also if it just taps R (PCB) then it can smack with the pipe doing 20 damage. If it uses the pipe smack more than twice, the pipe breaks on third hit. If it pulls out the third pipe and holds it in its hand for longer than a minute, it starts to lose its health.

Health: The Spiker has 100 health, because it can really mess up a team, but if it is shot in the pipes (RARE OCCASION) the pipe(s) break, and if it manages to get away without any pipes it still bleeds out.

[XViper1534]

The Excretor

Description: It is just a little smaller than a common infected, has long arms and long fingers and nails. It has long white hair, and can only see the glowing red eyes behind its hair. Really skinny to the bone, and only has underwear on. It does not have any legs.

Attacks: The excretor does not have legs so it crawls around just a little faster than the hunter crawls. When it gets close to a common infected, it can jump into the body of it by pressing R (PCB). It then controls the body of the common infected. (If you look at the back at the infected, you can clearly see the opening where the excretor is inside, though you only see the back of the excretor, just a bulge). The common infected's eyes are red and a bit bigger, there are small bulges at the infected's arms, and it appears to be a little fatter at the body. (You can not notice it, if it is within a group of common infected).

Once the Excretor is inside the body, it has double the health of the common infected, and does double damage. Once the common infected with the Excretor within dies, the Excretor rips out of the chest and tries to grab the closest survivor. If it manages to grab one it grabs the chest and tries to rip the chest, and does 10 damage per second. The only way to knock the Excretor off of the survivor is to KILL IT (Knocking off all of it's health). If the Excretor manages to kill the survivor, then it jumps into the body, and can hide until the survivors leave. Then it has to press R (PCB) to get out, then must find another common infected. Once it is killed, it makes a loud scream, that the survivors react to and the horde starts to attack.

2nd Attack: If it crawls up to a survivor (Pretty hard to do) it can grab the survivors ankles, it takes 2 seconds to trip the survivor and jump on it, so the survivor can smack it or shoot it off. Once the Excretor grabs the ankles, on the survivors screen, at the bottom, it sees a red flash (the eyes), and the screen starts to slightly shake, one shot or smack will knock it off, and kill it.

Health: It has 500 health once on a survivor, 250 health in the body of a common infected (Yes I realize i said double of the normal common infected, this seemed better), and 100 health as it crawls.

[XViper1534]

The Bomber

Description: It is a short, fat thing. Short like 2 feet tall. It's eyes are closed off by bubbles above and below its face. It has big arms and hands. It makes a ticking sound, and if it sees a survivor it claps its hands twice.

Attacks: Its main attack is exploding, it seems that when it died, it was a small child in an explosion. The explosion was toxic. So it has to walk up to the survivors and once it seems to be in range you press R (PCB) to smack itself in the stomach and it explodes. Purple toxic flies out and if it hits a survivor, it does 10 damage per splash on the survivor.

Health: It has 500 health, but if it is smacked it explodes.

[Dead Fish]

binge what does OP mean?

OP means overpowered and I have to agree. The Host is basically eating away med kits, every time he hits you. That's just way too powerful, especially in Versus. But I like the idea of worms slowly eating your screen. Sounds awesome. ^^

[XViper1534]

Maybe it should only be able to do it twice per campaign, and a lucky chance for the infected.

[XViper1534]

Anyone like my ideas?

[one of them]

Description: It is a short, fat thing. Short like 2 feet tall. It's eyes are closed off by bubbles above and below its face. It has big arms and hands. It makes a ticking sound, and if it sees a survivor it claps its hands twice.

A little midget chasing me around?
Sounds scary.

[blah]

the host is way to hard. If you play on expert, your definitely gonna run out of first aid asap.

I do have another alternative. The worms turn your health into temporary health. the only way to cure yourself is to destroy all of your own temporary health. So health kits will work. Or your buddies shoot you until you run out.

Another alternative is that the host shoots the worms at the survivors, if it is hit. The survivor looses 10 health per 2 seconds. To stop it, your buddies melee the worm out.

[Dead Fish]

A little midget chasing me around?
Sounds scary.

http://www.mariowiki.com/images/thumb/8/87/MKwii_Bob-omb.jpg/600px-MKwii_Bob-omb.jpg (http://www.mariowiki.com/images/thumb/8/87/MKwii_Bob-omb.jpg/600px-MKwii_Bob-omb.jpg)

[XViper1534]

I think the Excretor is a really good idead, anyone agree?

[XViper1534]

The Lurer

Description: This is an infected that the suvivors aren't aware of and don't call it by the name, it is essentially for players, not the AI.

Anyway, it is as tall as a common infected, same look as the Screamer.

Attacks: It doesn't really have any attacks, the main point of this boss is to lure the survivors. It is only really good for alleys and such. Example of good use: There is an alley, like the beginning of the sewers in No Mercy, and there is a hunter and boomer at the end of it. The Lurer could run across the alley, thus attracting the survivors, (May not work) and the survivors go there and are attacked by the hunter and boomer.

Health: It has 100 health.

[mazouth]

Try to find a med kit in the subways of no mercy or on the first level of blood harvest
There are medikits on every maps I'd say (on VS normal at least), This is one cons of blind rushers, they want to rush, without knowing they rush 2 meters aside of a medikit... in a bad shape.
But I agree in blood harvest's maps, they can be specially hard to find during forest parts.

Even though I'd like to walk on walls as well, indeed the rooter might be a bit over-powered.

[Gamer4life950]

The Host
Sounds sweet, but if u want something that hasen't been done...

My "Host"

Description: Looks like a normal infected but with maggots and worm-like critters peircing through its' skin.

Attacks: Regular meele attck causes some maggots from the arm to fly off. Just for a cool effect. But its Main attack is to start mutalating itself and screaming in pain. As it claws at its' stomach the maggots and worm-like critters fall to the floor. This causes a blockade. The survivors must either shoot the maggots or use a moltave to burn them away. I would say the raidus would be 10 to 20 or even 30 feet(if u feel like dieing), depending on how much you mutalate urself. Helath is lost when u use ur special attack and has the same recharge him of the smokers' ability. Health (idk might make him over powered) will recharge over time but only half of what u lost using ur special ability, so not for the survivors' bullets. Anyway, if the survivors are in the radius of the host while it is preforming its special attack the maggots will hit them as if they stepped in the swar on the floor. The only way to avoid the maggots on the floor are to jump over them and not land in them or go around them a different way. If they do get on you, ur fellow survivors must hit them off or they will eat u alive. Aventually they will die n fall off but u might be dead by then...also the longer u stay in the maggot swarm the longer they will afflict you. If you melee it maggots will hit you (for like maby 5-10 seconds). Shooting dose the same, so if your teammate is downed next to him don't shoot! casue then they gots maggots on um!

Health: same as smoker. But he bleeds maggots. No he dosn't explode. He aint a bommer!

[XViper1534]

What do you all think of the Excretor?

[Dre]

My "Host"

Description: Looks like a normal infected but with maggots and worm-like critters peircing through its' skin.

Attacks: Regular meele attck causes some maggots from the arm to fly off. Just for a cool effect. But its Main attack is to start mutalating itself and screaming in pain. As it claws at its' stomach the maggots and worm-like critters fall to the floor. This causes a blockade. The survivors must either shoot the maggots or use a moltave to burn them away. I would say the raidus would be 10 to 20 or even 30 feet(if u feel like dieing), depending on how much you mutalate urself. Helath is lost when u use ur special attack and has the same recharge him of the smokers' ability. Health (idk might make him over powered) will recharge over time but only half of what u lost using ur special ability, so not for the survivors' bullets. Anyway, if the survivors are in the radius of the host while it is preforming its special attack the maggots will hit them as if they stepped in the swar on the floor. The only way to avoid the maggots on the floor are to jump over them and not land in them or go around them a different way. If they do get on you, ur fellow survivors must hit them off or they will eat u alive. Aventually they will die n fall off but u might be dead by then...also the longer u stay in the maggot swarm the longer they will afflict you. If you melee it maggots will hit you (for like maby 5-10 seconds). Shooting dose the same, so if your teammate is downed next to him don't shoot! casue then they gots maggots on um!

Health: same as smoker. But he bleeds maggots. No he dosn't explode. He aint a bommer!


i like your host and the rooter.

the other ideas, i personally didn't like them.

But i would like to add my own idea of the host.

the host could be a pregnant woman filled with infected parasites that ate her baby.
her skin is just filled with the parasites/maggots/worms or what ever you want to call them.

she runs up to you to start attacking you if she sees you just like a common infected, she's actually just a pregnant common infected. but she runs a slower than the common infected because of her stomach. she runs as fast as a smoker. her only attack is just a common punch just like the regular infected and she inflicts the same damage as the common infected.

but heres the catch, once you kill her, she admits a loud cream and her stomach rips open when she hits the ground and bunch of reddish-grey liquid filled with infected maggots/worms/parasite spills out of her stomach and on the floor covering a radius about as big as the hummers in the game, with her being in the middle of the spill.

once she screams, that would be your que to move away from her because once you kill her and her body hits that floor, the liquid filled with maggots will start spilling from her. the moment she hits the ground, it takes three seconds for the liquid to reach its maximum radius span.

so you have a little time to move away from her when she dies, as the spill gets bigger and bigger for three seconds.

if you walk over this spill, it does 5 damage for every second that your on the liquid on normal. 10 on advance, 15 on expert.

the spills will remain on the floor about the same time it takes for a fire from a gas can to go out. once that time limit is up, the spill disappears and the the maggots/parasites/worms all die, and its safe to walk across again.

every time you receive damage from walking over the spill, the whole screen vibrates violently and turn everything black a white for about a split second and all four red damage triangles appear to let the player know that they have stepped in the spill. so if your standing over the spill for three seconds, the screen will vibrate a lot three times and turn black and white three times for a split second each the with all four of the damage triangles being displayed.

the whole point of this infected to is to make it difficult to go past routes because of the spill, or block off routes temporary. It will change the pace up, and make you play defensive a lot more if the path is blocked, as if there was a fire wall there and also make you take a different path if possible.

this infect can be used to block off paths and trap the survivors from going any further and setting up an ambush.
and the host can also eliminate too much camping. examples, hiding in the bathrooms on finales. once she gets that close and one of the survivors kill her, you have to move QUICK before that spill starts damaging you because your in a small area, and the spill will probably reach the entire bathroom floor, forcing the survivors to leave the bathroom ASAp or they will receive damage or die .

Say if a team, is waiting the the elevator on the hospital map, and they are camping in the corners taking out everything and not taking any damage, the host and get them out that camping habit. but the challenge is getting the host that close to them in the first place and having them kill the host that close so your spill can reach that corner. she can just blend in with the common infected and start attacking the survivors, and one of the survivors would shoot her and cause a spill to break out.

she is a boss infected, but she doesnt appear as much as the smoker, hunter, or boomer, but more than the tank or witch. If she spawned as much as the hunter or boomer, she can be over powered as to always blocking the survivors path, BUT it would be the survivors fault for killing her in a area the survivors need to pass by.

The host does not make any special noises to let you know that she around like the other infected. as she nots a real thread until shes dead. she nots a thread if alive, so if she makes a noise, then everyone would be on alert and kill her while she far making her totally useless. this infected is supposed to blend in to get close to the survivors to make her spill useful.

she might run up behind you and start hitting you while making the common infect noise making you believe that she's just a regular zombie, so you may turn around and shoot her, and you found out the hard way that, that was the host, so you say, "OH SHIT!! GOTTA GO!!! MOVE!!".

the whole point is for her to blend and make you think she's a common infected so you would shoot her with no hesitation, but her stomach and skin is noticeably different so you should be careful as to what you shot so close to you and just keep an eye out, because she can appear any where and any time just like a standard infected.

since she's the only boss infected that doesnt make any special noises or grunts, it makes it even more challenging and cautious not knowing when this thing will come and not knowing that its already behind you. so when you hear the common infected running towards you, take a look at the stomach to see if it has a big belly so that way you know who it is. you would want to shoot that thing as far away as possible.

[Dre]

so nobody aint going to comment nor read my boss infect idea???

tsk...............FUCK YALL!!!

lol

[always_l4d]

here's a thought:

THE INFANT

Description:
The Infant is basically an infected toddler, crawling on all fours at about 2 feet long and can crawl at about 1/2 the running speed (or less) of common infected. It has grotesquely razor sharp teeth and is oddly as silent as death itself. The Infant has about 25-50 health and is never alone...usually found in groups of 2-5 Infants and always close to a Witch (them seeing her as their "mother").

The Infant makes no sound whatsoever as it moves or attacks and can crawl beneath certain obstacles (cars, trains, shelves).

Attack 1:
The Infant latches on to survivors with its razor sharp teeth. Upon seeing a survivor, it tries to keep out of sight and in groups while moving towards a survivor. When in range, it bites and holds on, continuously ripping away making the survivor bleed 1 HP per second per Infant latched on (max of 5 HP per second). The only way to get them off a survivor is to kill them.

Attack 2:
The Infant in its deathly silence can make a banshee like cry with a range of about 20-25 feet. In doing so, it alerts the Witch (and other infected) nearby of the presence of the nearest survivor but effectively kills itself in the intensity of its shriek. All other infected and survivors nearby receive 5-10 damage and will be stunned for about 2 seconds. The Infant USUALLY shrieks when it is about to die and uses this as a last resort (of course human players can just use this to begin with to alert the Witch). This shriek has a delay of about 1 second so if the Infant is killed before the shriek is released, the shriek is effectively cancelled. The stun effect does not stockpile, but it does reset back to 2 seconds depending on when a survivor was hit by a shriek.

Alerting the Witch in this manner makes her attack the nearest Survivor in proximity. Survivor must be within at least 50-100 feet all around of the Witch or else the Witch will just run a bit and move to a different location.

Tactic:
Obviously this is a stealth oriented Infected. One tactic here is to use the shriek to alert the nearby Witch even if survivors manage to move around her.
Another possible tactic here is to wait for a horde to charge into the survivors. In the ensuing panic, the Infant(s) crawls up to the nearest survivor and latches on, making the survivor think that it is taking damage from the horde of regular Infected, not noticing the silent but deadly (sounds like a fart) Infant. When the horde has been cleared and they finally notice the Infants, they can either be stupid and shoot it away from their teammates (friendly fire anyone?) or smack it off. But of course, when the Infant is in danger of dying, it will shriek. 5 infant shrieks = 25-50 damage AoE + 2 second stun.

[OneKplus337]

The Zergling

Cost: 25 Minerals, Spawns 2

A zergling is a small, fast, maiming melee kill-machine that's the main disposable unit of the Zerg in Starcraft. They have four legs, sharp teeth, and two scythed arms that fold under their front legs while running but can rear up when attacking.

Oh...wrong forum...

[Steve Cloud]

The Rooter sounds like an awesome idea.

Just for god's sake, get a better name for it. It sounds like something from a pornographic superhero flick.

[binge]

my fav.
http://media.moddb.com/images/groups/1/1/941/100-Chris-Haggard_04.jpg (http://media.moddb.com/images/groups/1/1/941/100-Chris-Haggard_04.jpg)

more at
URL (http://www.moddb.com/events/left-4-dead-concept-art-contest/images)

[DIV007]

I like the sound of the Host. Worms at the edge of players vision would be a nice touch.

[DeliriumWartner]

Hehe, seems like some people like one, some the other. You reckon more Bosses will be introduced, before long? I think it wouldn't be Valve without a bunch of free updates to expand the game.

*Hint hint Valve*

[jaydig]

I have read dozens upon dozens of special infected ideas in the last couple years and none of them have the simplicity and utility of the three existing monsters.

Many of the ideas involve wacky mutations that go way beyond what is found in Left 4 Dead currently. I mean, the most unbelievable power in the game is the smoker's ridiculously long tongue, and that seems pretty normal compared to underground tentacles and midgets hiding in chest cavities..

[Stebok]

Haggard is good. It would sorta solve the cheap closet situations.

[mshield]

Ok, here's a simple idea:

An infected that has, how should I put it... 'sticky' skin. This would not only give it a gruesome demeanor (skin coming off it's zombified body and sticking to surfaces... urgh), but could relate directly to it's main attack.

This main attack would work in a similar fashion to the Boomer's vomit, in that it can spew a stick liquid on any surface. If a survivor is caught in it, the sticky liquid will start to stick to more parts of the survivor as they struggle to escape (think of the way they thrash around when caught by a Smoker), with the nasty goo causing damage to the survivor. As with other boss infected, it's secondary attack would be a very weak claw/hit, as while the survivor is stuck, he will not be able to go up to them to cause an unfair level of additional damage.

I was also thinking that his stickyness could possibly allow him to slowly climb walls, with the disadvantage that survivors could see the goo he left behind on any verticle surfaces.

Also, to stop it being OP, you free survivors from the goo with 2 shoves (I'm just thinking 2 so that he isn't useless in tight spaces where they are close together).

On another note, I think the 'excritor' (think I spelt it wrong) is a bit OP, in that without any medpacks/pills it could be really annoying, especially at the finale. There should be an alternative way to stop it, such as another player shooting the source of the worm attack on the survivor's body, causing them damage but preventing the explosion: creating a tough decision between getting rid of it now, or waiting incase you find a medpack.

I have read dozens upon dozens of special infected ideas in the last couple years and none of them have the simplicity and utility of the three existing monsters.


I have to agree, which is why I think that if they do choose to make new boss infected, they should step in instead of the original boss infected, in a new campaign, for instance. Think about it: the infected will probably have mutated in different ways across the globe, depending on the environment.

[XViper1534]

it alerts the Witch
This isn't good because that would destroy the "Never Alert the Witch" achievment (forgot the name of it).

[BoomER]

I have read dozens upon dozens of special infected ideas in the last couple years and none of them have the simplicity and utility of the three existing monsters.

That pretty much nails it.... and my own idea (posted in another thread) could be included in that appraisal

[zombicidalmaniac]

Quoting: always_l4d
it alerts the Witch
This isn't good because that would destroy the "Never Alert the Witch" achievment (forgot the name of it).
the achivements name is do not disturb

[zombicidalmaniac]

The shocker

it looks like a comon infected but with an electrical worker apperance.It appers randomly like the tank.

attacks: atomaticly incaps a survivor but this has a 3 min cooldown so it cant be over used once a survivor is incaped the shocker countinuesly shocks the hell out of its victum but the shocks only do 5 dmg.

tactics: best used for ambushes.

nuff said ;P

[Grieverlionhart]

THE BRICKSHITHOUSE
In spawning mode the player picks a building to play as and randomly comes to life thanks to some infected jam jar spilt in the kitchen, the survivors must try to wrestle their way out of the house if they are inside one, or run like hell to the saferoom which is immune to brickfection.

Primary attack - SMASH SHIT
The house uses its rooftop like a chair in a wrestling match and swats anything infront, without a roof left the house will extend a long rubber brick that punches survivors into the air killing them instantly

Second attack - HURL BRICKS
When survivors are within the house the house must remain stationary and use it's bricks to hit the survivors inside, these bricks come out the wall in chunks of 10 and are directed by the player in a navigational missle way like unreal tournament with the redeemer etc

Third attack - SUCK IN and BLOW
Holding down the crouch button will suck in all infected in the area, whilst aiming and then releasing the button will spew out every infected into the aim circle hitting the survivors with a toothpaste load of infected into the face

BONUSES - It can carry infected
NEGATIVES - It's a silly idea for a boss