| iddqd | Kills player. |
| idkfa | Takes all weapons away. |
| kitty | clip mode. |
| massacre | kills all enemies. |
| engage | change level, type in episode then level. |
| cockadoodledoo | turns player into a chicken. |
| quicken | invincibility |
| rambo | gives ammo and weapons |
| ravmap | reveals game map |
| skel | gives all keys |
| shazam | tome of power |
| ponce | gives 100% health |
| Description | File |
| Patch to upgrade registered Heretic from version 1.0 to version 1.2. | 10_12rhp.exe |