In this game it is possible to enable God Mode. Go to the game directory C:\\Program Files\\SEGA\\Condemned - Criminal Origins and click on "view the player data folder". Then, go to the Save/Profile000/SinglePlayer folder and select the savegame you want to edit. Open it with a Hex Editor (Hex Workshop) and find the line "DemoModeInvulnerable..0.000000". Replace "0.000000" by "1.000000", save the file and enjoy your invincibility!