Things I liked:
-The metroidvania theme is well applied
-The art was great
-The music was good, though it didn't fit with the environment
-It has lore
Things I didn't like:
-Spam of the breakable things, got me out of the game a little
-The camera movement is so rigged that made me dizzy, some smoothing could be good
-Falling into spikes makes you go to the last checkpoint, I think just going back to the last platform would be enough
-There was a bug with the appearing platforms that if I jumped just before it appeared it would send me to mars
I think the game it's fun overall, with some polish would be really good, hope to see an update :)