Hard game. Fun game. Cheap game. I enjoyed myself very much playing this game and I definitely think it's good value for money. That being said, it is not for everyone. I strongly suggest that people try out the demo on Steam first. I highly recommend using a controller with this game so you don't run into any issues with the camera.
Due to its charming art-style and characters, this game brings a nice refreshment to the indie genre. Where as the post-child of indie games is an 8-bit-side-scroller with metroid-isq exploration, this is trying to be different with its game-play and mechanics. Its unique, funny, cute and enjoyable but still falls short in some areas.
While it has a nice challenge to it, with interesting boss battles, enemies and areas, it is also borderline aggravating at times. Your attacks aren't 100% reliable, so while it is skill based, there is also a bit of luck involved, and because the game is skill based, there is also an element of grinding levels and money involved. The game isn't exp-based, it's based on items.
Really, all in all this is a charming and fun game, that's refreshing and enjoyable.