Would rate this a solid 4, maybe a 4.5 - haven't gone through all areas yet but it's been plenty of fun. An improvement on the last Bullet Heaven in all aspects; loads smoother, better character/boss/enemy designs... Granted, the character interactions aren't that stellar but I have some nostalgia for them nonetheless, and the gameplay is much more important in most bullet hells imho.

Pulled the score down somewhat because at least two of the achievements seem to be bugged. Namely, I've defeated two of the bosses (1st stage and ice cave boss) without getting hit once, and several of the main levels I've gone through without uing any bomb or getting hit, yet I haven't gotten the "Imperishable" and "Untouched" medals. Not really an achievement hunter as such but it's still annoying.

turtle boss is hard as hell

If you have good enough specs for your computer to run this smooth, you're set to have a good time with this game if you're into bullet hells/shmups. Good art, bullet patterns, cheat/handicap system, and character roster. I have a couple nitpicks with the game- the extra weapons and costumes are kind of flat out inferior to others, along with characters themselves, and such.

Additionally, paywalls are just annoying in general, though it's understandable. People have to make a living of some sort.

One of my Favorite SHMUP Ever.

The final pattern on the turtle boss is a bit too challenging for a world 2 boss.

EDIT: Whooop finally beat the final boss! Some patterns were okay, but some were so challenging. All in all, I enjoyed the game!