Gun power-up
You will lose a gun power-up as soon as you shoot one
of the other humans. This is because when you lose a life, you
lose your gun; and when you shoot a human, you lose a life.
Rebel Kronn warrior
Shoot the first three S.T.A.A.R. team members and nothing
else at the beginning of the game. After the first human is shot,
you will not be harmed by any gun fire. After the third human
is shot, you will transform into an alien in the main hallway
of the first level. You will have infravision when playing as
an alien, which allows targets to be more visible.
Baby Aliens
When you enter the building from the helicopter, shoot
the exit sign when you see a purple alien, then shoot the first
three lights. This gives you the opportunity to shoot baby aliens
before they form.
Chow Palace
When you get to the point where you fight the two grenade
throwing aliens, kill them and the game should give you enough
time to destroy everything around them. There are yellow drums
and ammo crates at this location. There is a single alien and
about fifty power-ups inside Chow Palace.
Shoot all of the back windows in the warehouse after destroying
the helicopter to enter the bonus stage.
Tank Top
Shoot the first fifteen windows on the right side of
the hanger in wave two, just after you enter. You will need two
players to do this, and you must use several views of these windows
to hit them all. This entrance leads to a room called Tank Top.
X Marks The Spot
Shoot the first ten hanger windows while outside on
the tarmac. The first two windows must be shot quickly, in transition,
immediately after the game starts. This leads to a room called
X Mark The Spot.
Killing the launching opponents
Whenever you encounter the types of opponents that
launch things at you, shoot at their head. Whatever they are shooting
at you will also be hit, as if they were targeted. Just keep aiming
at their head and they will eventually be killed. Note: This will
only work on one person at a time.
Shotgun
When you are in the warp ahead level, get up to the
part where it says "Self Destruct". You will turn, a
blue blinking light will appear. Shoot it and you will get a shotgun.
Whenever you receive a shotgun power-up you can simply aim in
the area around the target to hit them. You do not have to aim
exactly on target.
Easier game
At the start of the game, select "Warp Ahead".
This puts you much further in the game than the beginning. It
may be harder, but playing the beginning tasks just wastes lives.
Secret rooms
Enable the "Secret rooms" option. Do any
one of the following to enter a room called Chow Palace, which
is filled with power-ups.
Inside the bunker, shoot all the blue lights on the left wall.
Shoot out all the back windows inside the bunker.
When riding inside the forklift, shoot all the yellow barrels.
When riding inside the jeep, shoot all the yellow boxes.
When you are in the building shoot the name plate off the second
door as it is opening.
When you are being bombarded by the two aliens on top of the hill,
shoot everything yellow.