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.
To acquire PIGSTICKING, you must defeat the first Predator
level, Waterfall, with 80 percent accuracy.
SUPERGORE: Ups the level of blood and gore. To acquire
SUPERGORE, you must defeat the second Predator level, Area
52, with 25 marine trophies.
BALLSOFFIRE: Enemies are always on fire. To acquire
BALLSOFFIRE, you must defeat the fourth Predator level, Fury
161, with 40 Alien kills.
RAINBOWBLOOD: Causes the lights, smoke and blood effects to
be rainbows. To acquire RAINBOWBLOOD, you must defeat the
fifth Predator level, Caverns, and be spotted less than 15 times.
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.
submitted by HighUSA
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.
submitted by Justin Brink