Bonuses
In order to get these cheats you must earn them as described below.

SNIPERMUNCH: Alien gains long-distance jaw attack. To acquire the SNIPERMUNCH, you must defeat the first Alien level, Temple, and score 10 live civilian head bites.

NAUSEA: The entire screen shakes and moves, causing, well, nausea. To acquire NAUSEA, you must defeat the second Alien level, Escape, in less than two minutes.

PIPECLEANER: All characters are shown as pipecleaners, or as their skeletons. To acquire PIPECLEANER, you must defeat the third Alien level, Ferarco, with 15 dead civilian head bites.

MOTIONBLUR: Makes the screen blurry. To acquire MOTIONBLUR, you must defeat the fourth Alien level, Gateway, in under four and a half minutes with an average speed of 9 m/s or greater.

MIRROR: Mirrors your display of the level. To acquire MIRROR, you must defeat the fifth Alien level, Earthbound, with one live Predator head bite.

JOHNWOOMODE: When you attack or are attacked, the game slows down. To acquire JOHNWOOMODE, you must defeat the first Marine level, Derelict, with 80 percent head shots.

GRENADE: Stocks your Pulse Rifle with 99 grenades (but no bullets). To acquire GRENADE, you must defeat the second Marine level, Colony, with 40 percent accuracy.

WARPSPEED: Run very fast. To acquire WARPSPEED, you must defeat the third Marine level, Invasion, in less than four minutes.

LANDOFTHEGIANTS: Makes you very small. To acquire LANDOFTHEGIANTS, you must defeat the fourth Marine level, Orbital, using less than 20 shots.

SLUGTRAIL: Causes all Aliens to crawl on the floor because they have no legs. To acquire SLUGTRAIL, you must defeat the fifth Marine level, Tyrargo, with 32 Alien kills.

PIGSTICKING: Gives the Predator's Spear gun unlimited ammo and multifire. To acquire PIGSTICKING, you must defeat the first Predator level, Waterfall, with 80 percent accuracy.

BALLSOFFIRE: Enemies are always on fire. To acquire BALLSOFFIRE, you must defeat the fourth Predator level, Fury 161, with 40 Alien kills.

IMPOSSIBLEMISSION: Causes the game to be more difficult because you take more damage. To acquire IMPOSSIBLEMISSION, you must defeat the second Alien bonus level with 20 live marine head bites.

TICKERTAPE: Aliens all have a trail following them. To acquire TICKERTAPE, you must defeat the first Predator bonus level, Invasion, with 15 alien trophies.

TRIPTASTIC: Causes the screen to be blurry, jittering, and rainbow. To acquire TRIPTASTIC, you must defeat the second Predator bonus level, Escape, with 10 civilian trophies.

Infinite Grenades in Co-Op Mode
Start a Co-Op game on a level of your choice. Choose Marine-Grenade as your class. You have three classes of grenades: Normal, Frag, and Proximity Mine. Shoot off all rounds of your two least favorite types. After all of two types of grenades have been fired off, fire off all of your favorite type of grenade.

After you are completely out of grenade ammo, press the button you have set as secondary fire. You should now have a just about infinite amount of your favorite type of grenades.

Patch Enabled Cheat Codes
In order to enable these codes you must download the patch, and add -debug to the command line (change the shortcut to read "c:Program FilesFox InteractiveAliensvsPredatorAvsP.exe" -debug -lacmprtx) or whatever, the -lacmprtx will be explained in a bit. Doing this will disable Multi Player, saves, and you cannot earn new levels or new Cheat Options. Drop down the console ("~") and type, in capital letters:

SHOWFPS - Gives frame rate count

GOD - You do not die at 0 HP

GIVEALLWEAPONS - Gives all weapons and ammo

SHOWFPS - Shows the frames per second

SHOWPOLYCOUNT - Shows the number of polygons on the screen

LIGHT - The area around the player brightens. Do it repeatedly to get brighter and brighter

MOTIONTRACKERSPEED - 0 to 16, changes the speed of the motion tracker, but not the refresh rate.

TIMESCALE - 0.009995 to 4, changes the speed of the game

WIREFRAME - 0 to 3. 0 is normal. 1 has the level in wireframe. 2 has the characters in wire frame. 3 has everything in wire frame.

DOPPLERSHIFT - 0 or 1. "Enable/disable the Doppler shifting on the Alien player's sounds"

SKY_RED - 0 to 255, changes how much red is in the sky

SKY_BLUE - 0 to 255, changes how much blue is in the sky

SKY_GREEN - 0 to 255, changes how much green is in the sky

LEANSCALE - 0 to 10. Changes how much the camera leans when strafing (side stepping)

Bots:
The following bots are available with the -debug command. Bots usually are only available in a level in which the model appears. To force the bots to load use the -l switch (as seen above). They have to be in lower case.

a - Alien

c - Civilian

m - Marine

p - Predator t - Praetorian

x - Xenoborg

To get the bots, bring down the console ("~") and type in capitol letters:

ALIENBOT - Alien

MARINEBOT - 0 to 15. Marine/Civilian. Different numbers are different weapons. 0 is random. 1 is Pulse Rifle. 2 is Flame Thrower. 3 is Smartgun. 4 is SADAR. 5 is Grenade Launcher. 6 is Minigun. 7 is civilian with a Shotgun. 8 is civilian with a Pistol. 9 is civilian with a Flame Thrower. 10 is an unarmed civilian. 11 is civilian with a Molitov Cocktail. 12 is Pistol. 13 is android with a Shotgun. 14 is android with a Shotgun, one handed. 15 is android with a Pistol.

PREDOBOT - Predator. As with the marines they have numbers too, All but 1 I've seen has claws. 1 is cloaked and has a Shoulder Cannon.

PREDALIENBOT - Predalien

PRAETORIANBOT - Praetorian

XENOBORG - Xenoborg

Change Species While Playing
mpmorph

Type the following texts after mpmorph to enable the species.

marine duke
drone
predalien
praetorian
queen
exosuit
lightpredator
mhawkpredator
heavypredator
predator
chestburster
eisenberg
runner
droppilot
convict
combatsynth
apesuit
femalelabtech
grenadier
laboror
dunya_ai
ivan_ai
malelabtech
minigunner
sadargunner
obrian
pocguard
pulseriflegirl
railgunner
rykov
smuggler
tamiko
guard
guard1
guard2
guard3
officer
scientist
harrison
merc1
merc2
merc3
merc4
scientist1
scientist2
scientist3
smartgunner
malelabsynth
hazmat
scientistchief
pocofficer
mccain
pulserifleguy
femalelabsynth
guardofficer
facehugger

While in game press "Enter" and type " " (include the space after ), followed with the one of the codes from below and then press "Enter" to enable the code.

Cheat Code - Effect
mpcanthurtme - God Mode
mpschuckit - Add Weapons & Ammo
mpsmithy - Full Armor
mpkohler - Full Ammo
mpbeamme - Beam Player to Level Start
mpsixthsense - No Clipping
mpicu - Third Person View
mptachometer - Show Speed Info
mpsizeme - Show Size Info