Hey there Elgene!
I'm aware of the difficulty being not super balanced, with the limited I had I preferred an easier game rather than one that couldn't be finished since I wanted everyone to be able to access the ending! I do agree that the type of enemies that spawned definitely needs some extra work, I just had a .pick_random() on the enemy array, but I should have found a way to sprinkle the tougher enemies across the wave, perhaps for an update!
I'm aware that the orbiting weapon is very similar to the aura, definitely should choose more differentiated shapes next!
Anyways, thank you for playing! :D