I was able to complete the game in normal mode (finally).
Despite the game being frustrating, difficult, and annoying (because the stages are long, looking the same, and on rare occasions, difficult to progress unless you inquire online), there's something I like about this game. The crazy bullet-spells, the crazy action, and the crazy bosses who are crazy hard. Sure it doesn't stand out or anything but the game is fun, not to mention if you want a challenging platformer, I'd definitely recommend this.
Presentation wise, despite the portraits being uneven and all (meaning that when a number of character portraits change expressions, the position will be a bit "off") and its plain looking areas, I appreciate the developer's effort because, according to the credits, the entire game was done by one guy.
The story is so-so.
One dungeon can take 30mins-1hour, depending on your speed and ability to memorize locations/mazes. Be sure not to quit the dungeon until you complete it because you'll start from the very beginning of that dungeon.
Trophies are kinda difficult to obtain.
Edit: The music room is interesting, each music has a developer's commentary.
I'd give it a 8/10