Beat Chains of Olympus. Only a three hour plus ride, but damn, what a ride it was. I think it's the best PSP game I've played, translating some of the best aspects of the console games to the portable realm and losing none of the visual prowess. The only thing it potentially lacked was replayability as everything's quite easy to find on the first playthrough, and I didn't find anything to unlock. Definitely makes me want to go back and play God of War 1 again, if the PSN ever works.