8. Mr. Freeze (Batman: Arkham City)
https://www.youtube.com/watch?v=PEgCWSnfXFU There's something fantastic about the way you can play through Arkham City and feel like you can take on the entire criminal underworld by yourself, then have the game completely strip that away in the duel with Mr. Freeze. You feel so very small in this battle, being forced to hunker down for cover and wait for your perfect time to unleash a silent takedown. Freeze hulks around the level on a constant search for you, driving home his "monster in the closet" gimmick that works perfectly as he hunts you. It's this wonderful risk vs. reward gambit that Rocksteady is having you play with, as executing the takedowns on Freeze result in some dynamic combat scenarios that keep things really fresh and exciting. The Arkham games are filled with "I'm Batman" moments, and the battle with Freeze is one of the better ones the franchise has seen.