I played Red Dead Undead before playing Redemption and turned off assisted aiming to get an achievement at the beginning of the game and didn't remember to turn it on until I got stuck on one of the last missions for a couple hours.
I dunno, if a level is too hard to beat without auto-aim maybe its just way too hard.
I can't stand auto-aim in games. like if a target can/should be hit by missing by X amount of in-game inches, then why not make the target that large? I don't know.
I realized you had to have auto-aim on in Hades pretty quick though. Got fucking smeeeared without it
You have to be careful on some videogames that ask you if you want to lower the difficulty as you may inadvertently do it by bashing the ok/continue button just to get rid of the dialogue.
Try doing it on Give Me God Of War difficulty. Aren't allowed to change the difficulty mode without restarting. I've beat 3 of them after finishing the main story, but haven't picked it up in a few months. Playing Zelda Skyward Sword now.