To enable cheat codes for Oni, you must beat the game once. Then, start a new game and press [F1] during gameplay to bring up the diary. After that, type in the cheat you want to activate.
| Code | Description |
|---|---|
| Shapeshifter | Change character during missions by pressing the “F8” key |
| Liveforever | Infinite Health |
| Touchofdeath | Killing enemies with only one shot |
| Canttouchthis | Konoko cannot be knocked down |
| Fatloot | Gives you all ammo and health |
| Glassworld | Allows you to break almost everything in the game |
| Winlevel | You win the running scenario |
| Loselevel | You lose the running scenario |
| Bighead | Big head mode |
| Minime | Mini mode |
| Superammo | Gives Konoko powerful bullets |
| Reservoirdogs | Kumite Mode! (Konoko’s Enemies are fighting eachother..) |
| Roughjustice | Gatling Guns mode |
| Chenille | Konoko becomes stronger |
| Behemoth | Giant mode |
| Elderrune | Enables health regeneration |
| Moonshadow | Enables cloaking mode |
| Munitionfrenzy | Creates a pile of weapons in front of you |
| Fistsoflegend | Fists of legend mode |
| Killmequick | Konoko’s enemies are ultra strong and fast to beat |
| Carousel | Slow motion mode (Recommended for simple P233 machines) |