Frustrating!!
I like the idea, but its definitly lacking in gameplay.
its plain impossible to hit all Gumbas/Blocks and get away in time. also, there are many passages where you don´t have a chance to react, even when in perfect middle. and its extremly hard to memorize those things with absolutly everything looking the same.
this game needs the tempo, but you have to add a few blinking arrows or coin paths to make it less frustrating. also the collision detection on the trees needs serious rework.
i asume as the creator, you -have- played this thing through somehow, but i lost my nerve on 1-3 cursing. i hope you´ll add more details and a less insane difficulty to your next game.