Great game, nice visuals, great UI and sounds!
This might be not helpful advice at all since somebody before said the player is too slow:
For me, as soon as there are enemies (i agree that they should come in a bit sooner) it gets frustrating
trying to control the player enough to avoid them. You could try adding a "freeze motion" button/function, to regain control.
Then again, maybe i am just to slow :)
Anyway, very well done!