I finally got around to playing this one just now, and dang, I'm glad I did. This is a great little game, and you've got a super solid engine for this one. Lovely character design, intersting levels, and the enemies and bosses - bosses! plural! including a big final fight! - all had varied and interesting attack patterns. Good job.
There's a handful of issues that could be touched up if you want to keep working on the engine, but it's nothing major, and this felt quite well-polished. (The range on the melee attack seemed just a touch short, and left-clicking to attack felt good but it tripped me up that the attack went in the direction where I last moved, not where I clicked. But that's really it.)