The game looks nice. I like your 2D animations. I also like the mechanics and puzzles, they are indeed interesting and quite clever. I just think you shouldn't have written that in the game description, don't get me wrong, but self-praise is not cool, let others decide whether your mechanics are interesting and puzzles are clever :)

Some sounds would be nice, but there were just 10 days to make a game, and making sounds, or even searching for fitting ones is a time-demanding process and you obviously spent that time on the different parts of the game, which I think paid off.

Overall, very good game, well polished too, for a jam game. Great job!

Really nice puzzle game, managed to complete all the levels although the shot in the upper left section of the last level took us a million tries and it felt very tedious rather than fun. It would also be nice if the explosion effect of the ball wasn't as massive because it makes it harder to see things when it happens and it feels a little excessive. Maybe a simpler but still shiny smaller particles effect would be nice?
All in all everything else worked perfectly fine, the different mechanics were engaging and you introduced them very well. Good job! o/

Really really really interesting mechanics. more a puzzle than a platformer, which I prefer.
I'm so frustrated there is no sound and music though, a game this good needs them.

Also one other thing, I don't think you can fire the ball while the jump animation is in progress, I think you need to go into the animation controller and change the setting so you can fire while you are still jumping. (Something to do with end state that you toggle).

Please keep working on this I'll follow you to check for upgrades.

It's a shame there are no sounds or music because everything else in this game is just so excellent. The game does a perfect job of teaching you how to play without saying anything, and it's fun and responsive and nice to look at. I beat all 13 levels and I almost never stick it out like that in these kind of jam games with puzzles. But this one, I would have continued playing if there were even more levels. Really fun and excellent work.

Some indication which level you enter and which level you managed to reach in the level selection screen would be nice.

(And of course some sound effects...)

Nice game, I did get stuck in the level though and couldn't find a way out, but the art and style of the game are great. well done

I enjoyed all the levels. I can't judge you for the lack of sounds since my game has barely any sounds due to lack of time as well. My only minor criticism is that the ball is perhaps a bit too bouncy as sometimes the skill shots felt quite luck-based. 

This is amazing. The only criticism I have and maybe its just I couldnt figure it out, but the level with the opening text "I give up" the collectible that's at the top left where it is blocked by the orange squares, I tried shooting it with the ball at different positions, angles, and power for 5 minutes and wasn't able to get it.

Wow, I really liked this. Everything's so smooth. The movement, the shooting fireball mechanics, and the various particle effects. I also really dig the art style. The glowing blue and red are amazing to look at. The level puzzles are challenging but not too difficult and slowly eases you into more complex levels.

I assume because of the timeframe we had, you weren't able to implement audio? That's understandable. You have a really good game here, though. It's super fun.