"Hold that Fuji!" cheat mode:
Hold Pause + Option and keep them pressed during the entire code. Press 1+ 3. Then, press 2 + 5 + 7 + 9. The Predator will laugh to confirm correct code entry. The following codes may now be activated.
Security clearance
Press Option + 6 to raise or Option + 9 to lower.
Toggle motion tracker
Press Option + 8.
Recharge all weapons
Press Option + 1 + 2 + 3 + 4.
Toggle shotgun
Press Option + 1.
Toggle pulse rifle
Press Option + 2.
Toggle flame thrower
Press Option + 3.
Toggle smart gun
Press Option + 4.