Leatherneck Game System: Commodore Amiga Cheat Category: Cheat Game Company: Unknown Game Category: Unknown Hint, Cheat, Walkthrough:   Leatherneck This cheat works for both the ST and Amiga. Start the game and type 'CUTHBERTNECK', then press F3. This will give all players protection from enemy fire, but not from your team-mates' bullets. To return to normal press F3 once again.