Love the artstyle and the music is also super cool. Everything is super polished and nicely put together, the bosses are fun to fight, the drill mechanic is very neat, I had lots of fun. Gotta say, it gets a bit tiresome after some point spinning the joystick but the bosses are not really hard to kill, they are still a challenge but they don't huge tanky amount of HP, which makes the whole spinning joystick more bearable.
So yeah, I'm giving 5 stars every category to this one. It's a extremely good game that actually deserves more rates than what it currently has.