Jesper Kyd is a legend. Kane & Lynch series, Hitman series, early Assassin's Creed games, Freedom Fighters the list goes on and on.
His soundtracks sometimes sound quite melodic (Assassin's Creed, Freedom Fighters, Battle Chasers: Nightwar) but can also sound so crazy, nihilistic and dark all at the same time (Kane & Lynch, Adventures of Batman & Robin, Hitman). Either way he's a master synth keyboardist. Also loved his work on Darksiders 2 (despite having never played the game, it's just a good sountrack).