This game is a little underrated (quite literally :P). It was really really good. It was a real challenge, and yet not a rage-inducing one. It felt really fair, and the gameplay was crisp. Everytime you fail you can immediately get up and try again, and I really appreciate that. Although it took me a while, I got to the end and I'm so proud of myself!!
One tiny tiny tiny little critique: at first when I saw a red gate that needed opening, I ran into it thinking it was the goal. Maybe in the future you could fix that for stupid players like me ;)
Thanks for this awesome game, hope more people come to rate it. It's really good! Straight 5s across the board from me, I figure you'd like to know ;)