The background music was a tad loud and almost completely covered the sound played at the end of levels. For me the game feels kind of empty overall. I feel like it would be more engaging with more variety of movements (double jump, sliding, ect) or more types / amount of traps and the inclusion of enemies. As it is it really gives the feeling of being alone so I understand why it is as it is.
That being said, this is a very good base for a larger platformer. The controls are nice, as are the level layouts. I did not have my movement effected by the edges of platforms and I really appreciate that!