The levels start out fairly easy but quickly rise in difficulty, with saws, turrets, and heat-seeking orbs all working towards your demise. At the end of every area is a boss battle, but most of these play out in a similar fashion. If you lose all three of your lives, you have unlimited continues to jump back into the action, and fairly generous checkpoints mean you aren't sent too far back if you fail. What's pretty frustrating, though, is that there's no save or password system, so if you turn the game off, all of your progress is gone. The music and visuals don't push the envelope too far, either, but the platforming and single-screen rooms are pretty enjoyable. Three difficulty options add to the challenge, but I found the normal mode harrowing enough on its own, and I'm fairly well versed in the genre.