Alright pretty good job, even more so if this is your first try at it. You should add a bit of delay inbetween spells. Also I felt the boss movement was a bit awakard during some spells and he was immpossible to catch if he sarted moving in the opposite direction if you. Those aimed walls should give the player a bit of warning before hand since they move pretty fast and I found that I basically had to mindlessly stream to avoid them (my reflexes suck hurrr). Also during the nonspells they look kind awkward with all of arrow bullets sitting there pointing in random directions.
Still, every spellcard I found was actually quite well designed. There was nothing especially 'cheap' about any of them and further more they were fun to dodge.
The final spell "laser drumsticks" was quite excellent in particular and is definitely my favourite. Extremely chaotic and yet at the same time surprisingly easy to dodge once you figure it out. It has a bit too much health though and even if I make myself invincible and shotgun it I can barely beat it before time runs out.
Finally, my biggest gripe is the severe lack of FIFTEEN! :V
