Nice game! I like how the enemies have different bugs!
However, I think the movement is a little tricky ( at least for me ). It was kind of hard to move around and aim etc. Personally I would prefer if you could move with WASD and then the player would look in the direction the mouse is pointing. But I haven't played alot of 2D games so maybe I'm just not used to it.
But I like the idea of the game and I think it fits the theme really well!