Acquire 1 million DNA cash:
Enter cash as a cheat code.
AI does 2x damage and player does 1/2 damage:
Enter hard as a cheat code.
Energy meter regenerates:
Enter energy as a cheat code.
Life meter regenerates:
Enter health as a cheat code.
Unlocks all levels:
Enter levels as a cheat code.
Unlocks Fourarms alien form:
Enter classic as a cheat code.
Unlocks Rath alien form:
Enter primus as a cheat code.
Upgrade every alien form to max:
Enter upgrade as a cheat code.
