CaptainPrice on 24 March 2010
MGSIV. I had real trouble with some of the boss fights midway through the game. Might just be that I wasn't used to MGS-style boss fights as I hadn't played a previous game in the series. They seemed to get easier later on in the game.
Also had trouble with bossfights in The Force Unleashed and RE5.
Hardest core gameplay I'd probably say OpFlash: DR.
