Num 1 - God Mode/Ignore Hits 
Num 2 - Infinite Health 
Num 3 - Infinite Ammo 
Num 4 - No Reload
Num 5 - Super Accuracy
Num 6 - No Recoil
Num 7 - Rapid Fire
Num 8 - Infinite Shivs 
Num 9 - Infinite Weapon Durability 
Num 0 - Super Damage/One Hit Kills
Num . - Damage Multiplier
Num + - Defense Multiplier

Ctrl+Num 1 - Infinite Health Kits 
Ctrl+Num 2 - Infinite Throwable Items 
Ctrl+Num 3 - Set Game Speed