Pro Action Replay Codes:
Infinite Lives - 00D05B:09 -Rune
Infinite Health - 00D069:FF -Rune
Invulnerability - 00CC74:4E

Game Genie Codes:
Invulnerability - B6D-FAD-7F4 -Hybrid
Start on level 3 Streets of Detroit - 039-09D-E6E -Galoob
Start on level 5 Delta City under construction - 059-09D-E6E -Galoob
Start on a secret level - 079-09D-E6E -Galoob
Start with very little energy - 014-2FA-6EA -Galoob
Infinite energy - 00C-61B-A29 -Galoob
Don't flash after getting hit - 01C-56B-E62 -Galoob
Flash longer after getting hit - 59C-56B-E62 -Galoob
Invincible after getting hit once - C9D-FAD-3BF -Galoob
Full energy pots restore a small amount of energy - 01A-5F8-912 -Galoob
Full energy pots restore all your energy - 19A-5F8-912 -Galoob