Slower Fuel Consumption For Flame Thrower
EE26-37D4
Faster Fuel Consumption For Flame Thrower
7D26-37D4
Start With More Rifle Clips
FD36-44D1
Start With Even More Rifle Clips
4D36-44D1
Start With Fewer Rifle Clips
D036-44D1
Start With More Grenade Clips
FD3B-4F01
Start With Even More Grenade Clips
4D3B-4F01
Start With Fewer Grenade Clips
D03B-4F01
Infinite Ammo For Pulse Rifle
3C28-44D4
Infinite Ammo For Grenade Launcher
3C22-3D64
Infinite Oil For Flame Thrower
3C25-3704
Take Less Damage
D464-1D60
Maximum Energy From Medi-Kits
DD6D-1700
Less Energy From Medi-Kits
D76D-1DA0
Longer Invulnerability After Being Hit
EE6B-CD00
Most Attacks Do No Damage (Can Switch On And Off)
DD64-1D60
The next 4 codes affect new clips that you pick up only and not the ones you start with.
Infinite Energy (All Levels)
6D64-1D60
Less Ammo In Rifle Clips
742A-44A4
More Ammo In Rifle Clips
CD2A-44A4
Less Ammo In Grenade Clips
D923-3D64
More Ammo In Grenade Clips
F023-3D64