Unlimited Feral attacks:
     Enter Bloodlust as a case-sensitive code.

Unlimited ammunition:
     Enter UnleashHell as a case-sensitive code.

Restore health:
     Enter ImJackCarver as a case-sensitive code.

Feral Attack in the early levels:
     Enter FeralAttack as a case-sensitive code.

All maps:
     Enter GiveMeTheMaps as a case-sensitive code.