I enjoyed playing this platformer game. Here is my feedback about it:
- You should rework the collisions so everything works a little bit nicer. Sometimes I got stuck on flat ground because (I suppose) some of the sprites were not perfectly aligned. And I'm pretty sure I fell through a platform but that may be due to my lack of skills! I feel like the collision box of spike is a square, am I right? If so, you're making 50% of background killing the player for apparently no reason. Overall it's not a big deal for a jam game but if you correct that, the game will be way more enjoyable. I don't know if that's what you're using but Unity Tilemaps could be pretty useful in this case.
- At some point it got very hard to see where I was going. I like the art of the game and I think if you dezoomed a little bit, the player would also get to enjoy the world you designed for him.
- When the player dies, the character is immediately respawned back to the last checkpoint. If you add an animation and let the player see why they died, that would help tremendously!
All these are not big issues but I just wanted to provide a complete feedback in case you wanted to improve the game. I really enjoyed playing it anyway! Keep up the good work!