The graphics are really impressive, and the game runs at a solid framerate with minimal slowdown.

The combat and physics feel great too, but I have a few issues with the level design:

The screen crunch from the screen resolution is not adequately dealt with, leadign to cheap deaths even on the first level. The developer did try to mitigate this with a singular coin trail in level 4, but seemingly forgot to do it anywhere else. Level 4 is also where a massive difficulty spike happens, with conveyer belts rushing you forwards into insta-death spikes. When combined with the lack of visibility on death pits, this is a very frustrating level. If it weren't for the awesome auto-save feature, this would have hurt my rating of this game way more than it did.

Even if the levels are frustrating at times, they are still (mostly) fair, fun, and at a good length for short sessions.