All Weapons
     Collect at least 35 perfect zone gems.

Infinite Ammunition
     Collect at least 45 perfect zone gems.

Bonus Level
     Collect at least 50 perfect zone gems to unlock the Cairo level.

Infinite Lives
     Collect at least 60 perfect zone gems.

Invincibility
     Collect at least 65 perfect zone gems.

All Cheats
     Collect at least 78 perfect zone gems.

Cheat Codes
     During gameplay, hit [Esc] and quit. Then go to Replay Level,
Bonus Game Modes, and it will prompt you for a password/code. Enter
any of the following:

All Weapons
     w,a,w,d,d,s,s,a

Unlimited Ammo
     d,s,d,a,w,s,a,s

Unlimited Lives
     w,w,s,w,d,a,a,d

God Mode
     s,d,w,w,a,d,s,a