I only had a few minor complaints. One was that doing the double-jump somersault should have been easier to pull off, especially since some of the later parts of the game rely on it so much. Second was the level where you go through doors and some of them take you back to earlier in the level, meaning you have to traverse the same bits again taking pot luck as to whether you’ll progress or go backwards.
Finally, there’s the end boss. Oh my was he hard. I thought I’d nailed it when I started flying-kicking him, but then he countered with some sort of rage move which hits me, or a few dragon punches. He took so many attempts, and when I did manage to kill him, I was down to one bar of health and he was about to hit me!
Well worth a purchase, especially as it’s half price at the moment.