Hey!
First of completed your game and I hate your for the level 6 hhahah it was too long i spent like 10 mins only on that level
The main mechanic is solid however I think the game would benefit from adding some new mechanics to move the ball cuz sometimes it got stuck or it was too difficult to move it while dodging the bullets. Maybe some rope pulling stuff and a kick? And I think levels would be better if they had new mechanics and not being so long ( i was pissed while doing level 6 ahhaha)
And I liked the bloom effect(is it bloom that you used?) anyway good job!