If you got stuck after the first power, you have to presss SHIFT to dash and destroy the log.
If you got stuck after the second power, you need to backtrack a bit to find the highest place in the game.
Yes, the first one was the issue. After collecting the final power, game's over?
Yep! We planned to implement a proper game over but the time got away from us. I hope the gameplay was still fun though!