Some of the last bosses require more luck than anything else. I watched a youtube video of one in particular, and the player just got lucky that the stupid boss kept using a regular attack with the physical barrier up. I tried to do that and got walloped with magic spells. Changed my tactic to block magic and ended up getting hammered with almighty spells. Maybe the guy was playing on easy, I don't know, but I was able to beat the boss with a lot of luck and patience (well, not much patience as I was basically screaming my head off for an hour at the bastard). The last boss on chaos is actually quite easy... unless he spams an unblockable attack that can ruin your whole damn day. Needless to say, beating the game this afternoon wasn't exactly fun. Feel like I need a cigarette and I've never even smoked before.