I've reached the second phase a couple of time.
The game is pretty cool, I like the visuals, the way the theme mechanics is presented with bullets just going through the enemy is hilarious, like someone else below it might be the most satisfying bullet collecting mechanics among the games which do just that to me too. The game controls well, the second phase of the boss is super cool, both visually and mechanically, the game is hard for me which is a good thing.
Very fun entry, thanks for sharing.