I enjoyed the combat a lot. I love this one particular skill where you need to aim a bouncing projectile, and since there's a preview trajectory for the shot, you can act like you are NASA working out a way to land a shot on an asteroid a billion miles away from Earth.
I also liked how freaking many unlockables there are. They are like Badges in Paper Mario. I love that.
My main complaints are that the art could use some polish, and that I'd have liked more banter between the main characters.