It seems reasonable that certain console commands (such as tgm - Toggle God Mode) might prevent the unlocking of achievements while active and/or others (such as directly manipulating skills/perks/etc.) permanently block achievements for that character once used.I have heard that using any console command prevents you from unlocking any achievements for that 'session' (variously, until you load a save or restart the game).I have heard that using any console command, ever, permanently prevents that/all characters from unlocking achievements.I've heard a few conflicting theories and can think of a couple more: Unfortunately, I can't find hard data on if/how the use of console commands affects the unlocking of Steam achievements. I've painted myself into a corner and am forced to choose between abandoning a couple hours' progress or cheating my way out of it.