This game is also available on Xbox.
Retro Game Cheats for Destroy all humans (PlayStation 2)
Effect: Invincible
When:
In a mission, bring up the Start Menu and hold L2
How:
Square, Circle, Left, Left, Circle, Square
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Effect: unlimited health
When:
during gameplay
How:
Pause the game. Hold L2 and press square, circle, left,left, circle, square
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Effect: Infinite Ammo
When:
In a mission, bring up the Start Menu and hold L2
How:
Left, Circle, R2, Right, R1, Square
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Effect: Unlocks all upgrades
When:
Pause game while on the Mothership
How:
hold L2 and press spuare,circle,left,left,circle,spuare, then release L2 while the game is still paused. A message will confirm if the correct code has been entered
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Effect: Increase DNA
When:
At mothership's main menu
How:
hold L2 and press R1, R1, R2, R2, left, Right, Left, Right, R2, R1 then release L2. A message will confirm if code was entered correctly.
Submitted By:
Effect: Infinate Mind Power
When:
In a mission, bring up the Start Menu and hold L2
How:
R1, R2, Circle, Right, R2, Circle
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Effect: Maximum alert meter
When:
Pause in gameplay
How:
then hold L2 and press right,spuare,R2,R1,right R2, then release L2 while the game is paused. A message will confirm cheat.
Submitted By:
Effect: Resets alert meter
When:
Pause in gameplay
How:
Hold L2 and press R2,Right, R2, R1, Square, Right, then release L2 while game is paused. A message will confirm if you entered code correctly.
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Effect: no cops