PLEASE NOTE: We take no responsibility for any changes you make to your hardware, software, drivers or O/S as a result of the cheats listed here. Only a few of the cheats listed have been tested and we cannot guarantee any of them will work. If you come across a bad/non-working cheat, please let us know and we will remove it.
If you change the settings under Damage1 from 1 to 2 you will deal double damage with any weapon, 3 will give 3 times, etc.
To gain invulnerability, go to the game directory, open the run folder, and open the "Difficulty.txt" file with Notepad. Change everything under damage0 to 0.0. After you change this you will take no damage in the game other than falling or from collisions.