Controls: the movement speed makes it a bit agitating when you hit those yellow hedgehogs too much but it also keeps it fast paced and exciting. 9/10
Design: Its a bit gloomy or dark and repetitive in colors/shapes. Nothing I disliked though 7/10.
Level design: This is what I always look for. 9/10 here. Very good symbiosis between movement options and challenges. The ice gave me a good challenge. A lot can be added here.
Good game, thanks for sharing.