Cool game. I like how you interpreted the theme. The graphics are cool and the audio sounds good. The controls feel snappy and responsive as well. The level design isn't bad, but it is kinda disappointing that only two levels actually gets replayed upside down. The rest mostly just have two divided segments. I think it would be super cool if all the enemies and spikes stayed around so that the level is the same, just upside down. Also, some of the platforming can feel a bit too precise and having to wait for the saws to go away can be frustrating. But it's also possible I'm just bad at the game :P
Overall, I think this entry is pretty fun and with a few adjustments has a lot of potential.