The PC version is running at a stable 60 FPS on my meager mid-range rig, and I've yet to encounter any bugs. My only real complaint is that the aspect ratio is locked to 16:9; if you're on a 16:10 monitor, don't forget to change the display mode to Letterbox in the configuration menu before you start the game.
Oh, and the actual game is pretty good as well. Don't expect a lot of acts, though; the meat of the game lies in the optional challenge stages.
Oh, and the actual game is pretty good as well. Don't expect a lot of acts, though; the meat of the game lies in the optional challenge stages.