Very creative take on the exploiting mechanic. It took me a minute to figure out what it was, but once I figured it out it was a pleasant surprise. The animations are quite nice, like the transition from the first to the second level.
One of the few gripes I have about this game is that it is very tedious. Having to constantly die to collect more ammo is very time consuming. On the third level if you didn't spend enough time on the first level collecting ammo then trying to get more is a pain as you are only given one piece of ammo. If given a few extra ammo it would make it a lot less tedious as more ammo would be able to be collected in shorter amount of time to take on the boss.
Overall an enjoyable but tedious game.