I really enjoyed this game, I have to admit I did struggle with the first Boss but once I got used to it, it was very satisfying beating him.
I'm definitely gonna keep playing till I unlock all the enemies and I saw there might be a second Boss in the trailer so looking forward to that.
I have a few suggestions, is it possible to get a Boss Health bar show up at the top of the screen so that we can see that the attacks are actually doing some damage, Also is it possible for the music to change to show it is an actual Boss fight.
Cheers
Awesome job mate