God mode - Pause the game, then hold L + R and press
A(2), B, A(5).
All weapons, items, keys - Pause the game, then hold L
+ R and press A, B(2), A(5).
Invincibility - Pause the game, then hold L + R and
press B(3), A(5).
Berserk mode - Pause the game, then hold L + R and
press B, A, B, A(5).
Computer map - Pause the game, then hold L + R and
press B, A(7).
Radiation suit - Pause the game, then hold L + R and
press B(2), A(6).
Advance levels - Pause the game, then hold L + R and
press A, B, A(2), B(2), A(2). You will advance about 5
levels, depending on
the current level.
Tower Of Babel level - Pause the game, then hold L + R
and press A, B, A, B, A, B(2), A.
Hidden Military Base area - You can find this area in
the Toxic Refinery (Episode 1, Level 3). Complete the
first half of the level (before you
enter the blue door), then go back to the starting
point. Look inside the pool of radioactive waste and you
should see a platform (if you flipped all the switches
in the first half). Walk across the platform towards the
wall it leads to. The wall will open and you will have
to defeat a series of enemies. Explore the secret area
more and you should find an exit door. Enter it and flip
the switch (the stats will not appear). You will now be
an area called the Military Base. Note: This area can be
very difficult.
Gameshark Codes
Must Be On [M] CBBF5A140767CAD6
CDAD2A829BEE4132
Infinite Bullets 2A442D4BCD93CB86
Infinite Shells EBEB422A264E5A81
Infinite Cells DFA4DC6CADBC404B
Infinite Rockets F123FA07FE1E26B4
Infinite Armor A579CE28BFF0AE95
Have Blue Key BF76B3C91BCA9F4D
Have Yellow Key 95D6D77DA71423DE
Have Red Key 350837EE37D1CD2A
Have Shotgun A4E9F5B15051A549
Have Chaingun 019C50AE7C44F22B
Have Rocket Launcher 62F84B837FDBF176
Have Plasma Gun 1361EFA8C09416BB
Have BFG 9000 644330F3C7926AB4
Have Chainsaw 54BB29529D9DA348
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