The concept is cool, it's funny seeing celestial objects wearing glasses and fighting with regular weapons lol.
I haven't gotten past the third level because of the difficulty, having to pick so many coins on each level and dying with a single hit, which makes you restart the level, can be a bit frustrating. I'd suggest having a health bar, shorter levels or adjusting the difficulty.
About the controls, given that you use the mouse to aim, I think it would be better if the protagonist stayed always in the exact center of the screen, also if possiblle, it would be great to have gamepad support, since it couldwork very well with twin sticks.
I'll have to try again later, I have yet to reach the platformer stages.