I really like the concept of this game! The back and forth of shooting and hitting the ball around is challenging but satisfying to pull off well. However, there seems to be a couple of game breaking bugs. In the third level I seem to get stuck on an invisible wall, as shown in the attached screenshots, preventing me from entering the room and softlocking me. Pausing is also broken after the first level for me, the game seems to pause but the pause text doesn't show up and I am unable to unpause the game just leaving me frozen. I hope that you can fix these bugs because the underlying ideas here are great.
