Good Game, I really liked the idea of teleporting through universes, my favourite enemy was probably Don Cubencio because their bullet pattern was more involved (And didnt use those bullets that track you for a long time).
The balancing might be a bit off, almost every upgrade can be bought in the first shop visit (and had to wait for the timer to end for the second shop). Other times it feels a little bit unfair like how often the perfectly tracked bullet appear, or being hit with a bullet right after leaving the shop.
The Visuals are really nice and appealing, and the soundeffects are really nice too (even tho there arent many, e.g.: explosions, shooting, interacting, e.t.c all dont make a sound. Not a big deal, but makes the game feel a little bit empty). In general good game :D