The presentation is really nice, especially the 3D models and music.
However, it took me several tries to finally realize I could sprint with the Shift key (it's mentioned nowhere in-game, only in the game's description).
There's no reason not to sprint, and you move so slowly otherwise that beating the game is nearly impossible! I would personally just give the player one consistently fast speed; that would make the game a lot more enjoyable.
Also, as others have said, making the instructions stay on screen for longer would definitely help.