Instant fun and solid package overall
I like the original spin on the concept, where you've turned a bullet hell in more of a puzzle game where you have to solve rooms to move on and with no weapon for the player you essetially just focus on dodging.
The vector art is really good, it has that distinctive cartoony flash game style to it ^^
also a good point on approachability hre as it starts slow and the fact you don't fight back really helps learning how to avoid certain patterns since the game is focus on one task to either survive or activate items.
My only gripe here is that you can accidentally go backwards if you didn't remember which door you came from afet some intense dodging, so it could be nice to have only the next level's door open.
Other than that like i said solid and polished, good job :)