Ok, this was so super frustrating and I want to quit the game frachise forever. So I was doing the 100% hardcore run along side the regular hardcore run for the achievements (only ones I'm missing). I was on the final battle level. I manage to somehow glitch my bunyip so that I couldn't move and I couldn't jump out (I was continously "falling") and the enemies beat me to death before I had time to react and restart the level. Now I'm back at 0%.

I know this is morally wrong and defeats the purpose, but is there a way to cheat back and old hardcore save?