Ouch dude. That really, really sucks. I haven't had such a bad experience with a video game like that since Half Life: Opposing Force back in, I think 2001? It took me about three hours to whittle down the final bosses health because there's no indication of whether you're actually doing damage to him, so I had no idea what to attack him with. Finally brought his health down to nothing, and as he died, my computer crashed and I lost all my progress. So, I know exactly how that feels.