Successfully complete and save the game on the easy difficulty setting to unlock a "One Hit Kill" and "Weapons Stay" options for multi-player mode.
| Reverse Joker Command P1 | D00C7DD0 ???? |
| Player 1 Codes | |
| Infinite Health | 800CBDA0 0064 |
| Have All Weapons | 800C7F38 0FFF |
| Infinite Armor | 800C7F1E 0064 |
| Infinite Shotgun & Super Shotgun Ammo | 800C7F3C 0064 |
| Infinite Machine Gun & Chaingun Ammo | 800C7F3E 0064 |
| Infinite Grenades & Grenade Launcher Ammo | 800C7F40 0064 |
| Infinite Rocket Launcher Ammo | 800C7F42 0064 |
| Infinite Hyper Blaster & BFG Ammo | 800C7F44 0064 |
| Infinite Rail Gun Ammo | 800C7F46 0064 |
| Super Jump (Press Square) | D00C7DD0 8000 800CBD86 FEC7 |