I really liked the concept, storyline and character designs of this one, but the gameplay just didn't quite do it for me.
The platforming is functional if unremarkable. I found the enemies to be too bullet-spongey, your base attack just boring to use and the charge attack too hard to tell when it's ready or not. Also, the literal goddamn bats. I could deal with the first bat, barely, but not two at once, in a confined space with nowhere to retreat to. They knocked me off and I kind of stopped there.
As an aside limited lives and being sent back to the beginning on death are both artificial-difficulty, game-doesn't-value-your-time things I'm just not a fan of.
The only other thing I'd comment on is the music. It's not bad, but it's just kind of there, and I've heard both songs before in many other games.