Cool game! Well done!
But when I started it I had no idea what to do... I started killing the enemies by just running my mouse over them and I thought the ball was the enemy. Then I died. Killing the enemies the wrong way should not make the same sound as killing them the right way. Also a small tutorial in the beginning would've helped alot.
When you get the bug that makes the ball teleport around, there's no gameplay left in the game. You are not fast enough to smack the ball and change it's direction, you just have to stand still and hope that the ball teleports to an enemy...
But the game looks great and it's really well made!