Rage mode doesn't seem to be working at the end there? Nothing that happens when I press R...?
Otherwise this was a fun game. Feels like the difficulty between levels wasn't all the most balanced, started out harder than the couple ones before the end, but after those I guess I did appreciate the break. You're happy you overcame the most challenging part.
Controls are good, music's good... overall it's a pleasure to play! Maybe not perfect but fun. Cutscenes add to it too. Wouldn't mind more games like this.