I've only got to the second hard boss but that was fun!
If I had to say something, though:
- An epilepsy warning would be good to have in this game, as the menu shows a lot of flashy and color changing.
- I think the bloom / emission / blurriness is too strong in a few aspects of the game, such as the corners, boss text and possibly the player. Tuning it down a bit might make it look a bit better.
- It would be fun if you didn't grab the ball you could still exchange a life with it, but you would teleport to its position (which I thought it was going to happen but I think I miss read it). It would lead to some interesting strategies I think.
- The colliders seem a bit off for the small circles, as they seem larger than what they are, as I've lost a few without touching the "enemy". (It might be that their collision is not set to continuous, not entirely sure). Are the triangles box colliders?
Regardless, it was a fun game. I've left my rating, congrats!