Your game has a lot of great elements! I love how you spruced up the sprites with some glow and coloring. Very nice pizzazz. And the fall animation on the character was really pleasing.
Also, that water reflection ... stunning. I wish that had been used more! Maybe in the future "forest" level :)
I'm not sure whether I liked that there were multiple paths through the last two levels. On one hand, that allows the player to be creative. On the other, I had to play through multiple times to confirm that there really only were single exits XD And it took me those few times to get pretty good at using the rocket to traverse, so I would love to see that mechanic being honed and really utilized for traversal!