There's a lot I really like about this. The menus are SUPER well done, with great transitions and cool scrolling text. The music is very good and the sound effects are satisfying to listen to!.
The graphics were smartly done in a way that you can always make out the most important stuff on screen, which is super important for a bullet hell-esque game like this.
The tutorial is very clear and the gameplay is super addicting. The dashing is really satisfying to use, both to propel yourself forward or to get an instant turn back, and the invencibility it provides certainly helps. Also, the bullet the enemy shot getting dissolved as the enemy dies is a very nice and appreciated touch.
The game is hard enough to be tricky, but not hard in a way that's rage inducing. It's a very tightly polished experience. I really enjoyed it!