I'd recommend copying the save file off to someplace outside the save folder, make whatever changes you want to make, save with a new file name (increment save02 to save03, for example), and then see how it goes with the new file. If you're going to use gibbed, make a backup of your Axton save before you mess with it. As far as the game, it doesn't care and there are no AC mechanisms in place that I am aware of. That's technically a cheat, but it's your game, so you play it however you'd like (co-op mode should be played straight, though).
Originally posted by sudn d:Not trying to cheat, I just wanted to play the game normally, but with Zer0 instead of Axton without starting all over.
