I am impressed.
I couldn’t finish the game, but that’s on me: if the game looks like an action game, I am gonna play it as an action game, even if the game clearly warns me this is a bad idea :-). But when I slowed down, I got a lot farther: this shows the difficulty is real, not just a bad controls or anything. ADDED: scratch that, I just finished, with the druid of all things.
You implemented the theme extremely well, including the wildcards, nothing feels forced. When I started the game, I thought “the difference in abilities are gonna be just cosmetic”, but nope, every hero plays very different.
The graphics were clear, though sometimes it wasn’t obvious where projectiles are exactly, but I feel like this is me, not being used to 3D bullet hells. Otherwise, the graphics had a consistent theme, was colorful without being garish and generally pleasant to look at.
The only thing I have an issue with was the sounds. The effects weren’t very clear, esp. with the druid, I didn’t know which sound meant “you smashed a projectile” or “you got hit”. It also didn’t fit that well, you have a PS1-like graphics with NES-like sounds.
Also, the music slowdown effect was a mistake IMO: I often stopped to look around or maneuver around a projectile, and the result was a grating, disharmonic mess. Maybe an “underwater” filter would fit better? Not sure.
It would be nice if the game would save the world on exit, so that I wouldn’t have to start with the knight every time. But given the length, this is not a big issue at all.
In total, I had a lot of fun and was very pleasantly surprised. Good job!