I love that game but I wish there was like a phase shift ability or something that makes me continue in the zone because I love when the game speeds up but I have to tap because levels are design not to reach that high speed. I think you could add a phase shift ability that make the player phase through the red areas but the ability runs for like 1 second or something and need to cool down but also if you successfully phase through something, you get right away. I wish the game allow high skilled player to have combos and make the main character run on high speed with max damage.
overall, great game :)