I know it's a few years old but I'm surprised it's barely been mentioned here. It's one of the most satisfying games I've ever played I think. It's basically a boss-battle game with some nonsensical walkthrough cutscenes in between. Feels a bit like Afro Samurai in style, same creator. The art style is amazing, the music is amazing, the fighting is amazing. I urge you to give it a try. You can get a good discount on tomorrow's Steam sale. Here's a dev just acing one of the bosses, insane. Each boss basically has 6 phases you have to get through with your 3 lives.