All cheats
Finish the entire game with at least 78% completion.
All weapons
Successfully complete the game with any completion percentage.
Bonus level
Finish the entire game with at least a 50% completion to unlock the Cairo level
Infinite ammunition
Finish the entire game with at least a 55% completion.
Infinite lives
Finish the entire game with at least a 60% completion
Invincibility
Finish the entire game with at least a 65% completion.
