The controls didn't seem as tight as the first game. The graphics are better (duh). The sound and especially the voice acting is perfect. Really. The story was hard to follow at first, but you get it after a while. The ending gets a "woah!?" I beat the game very quickly, unlike the firts one. The puzzles in this game were not at all difficult. There is a serious glitch in the Dark Forge area. DON'T go near the birds as you enter the area, or you'll never get out. It's a real glitch.
No real boss fights. It's an OK game.