Fun spin (eheh) on this kind of game. Gobbling up enemy bullets and shooting back was very satisfying. I completely forgot the dash existed first attempt, and it made the second run a lot easier once I had gotten used to playing without it lol.
Art did the job, but the flat spaceships didn't really feel cohesive with the background, some cool designs on the ships would've been welcome - the few that had something extra looked better, but the player ship especially could have used some fanciness. Not a huge deal really.
I did run into a bit of a nasty bug where some ships and bullets both just stopped moving and stayed stuck in place. The bullets acted like they were still "active" and could do damage, and I could even absorb them, but they would just turn blue and stay on the level, they wouldn't orbit me and I couldn't shoot them (although it would still play the shooting SFX as if I was). Obviously hard to tell from a static screenshot but everything here (enemies and bullets) is just still. Can see from the yellow ones on the left just stacking up like that and that blue one in the bottom left hasn't been fired by me.
Overall it's a solid entry and pretty fun, definitely a very good first game.