Congrats for creating this game :)
The first types of enemies are really simple and the second one are really difficult. Maybe the gap is too big ? And you can't really dodge since they are shooting all the time which makes it even more difficult ^^. Appart from that the controls feels nice and I really like the idea of the shooter game ! Nice job.
If you have time to play my game and rate it, it will be much appreciated :) Thx !