Got Dynasty Warriors 7 platinum, which took me around 100 hours total. I really wish there was a reason to play on Chaos in the game, but alas, there is no reason to other than added challenge.
I got the GOTY edition of Fallout 3 and decided to go through the DLCs, so I could get 100% for that game finally. All was going well with the Anchorage DLC (the first I chose) through the second mission, then the game locks up at the beginning of the third mission in that DLC, which made me promptly shut it off and play something else.