This was an impressive amount of work in such a short window of time!!! Love the visuals and story telling. The color scheme works out pretty well as i can clearly make out what's interactable. I have some feedback for you:
1) The bird with the fire balls, man those can be quite tough to get around especially the last spaceship area. Maybe have the shoot interval to be longer for my personal taste
2) There are times where I would fall in between the collapsing blocks and fall in the lava lol. In addition, I sometimes can't move when i happen to land a little in between the blocks. Not sure if its a glitch with the collision hit boxes in Unity.
3) I love that you have checkpoints or this would have been a brutal game lol
Awesome entry man and congrats on finishing such a polished game!!!