The enemy AI is very polished. I love how they move. There is one time the enemy spawn into my face and kill me instantly...
I feel a lot of impact when I hit an enemy shape, but the game is not really responsive when I earn bits or getting hit (no sound effect or visual)
I also personally think the screen get too messy sometimes I can't find which is the bit to collect while focus on shoot/evade.
Nice job! love the shader!