The controls are simple enough, and I actually do enjoy how limited they feel; makes it more satisfying to traverse the stage. However, I do think that a simple tutorial would still help, since it would make the game easier to understand right away. There's also the fact that letting go of blocks can sometimes hurl you in different directions, which lead to a couple of frustrating deaths for me.
Still very fun! The visuals are nice, and I appreciate the choice to change your guy's color. Took me about 40 minutes and 66 deaths to beat it.