It has some great potential! Based on the description it looks like you will continue working on the game. Most of the things that are in the game works well. I wasn't able to read all the signs since some were also upside down. Also if you play in the browser and press escape it will end fullscreen mode.
I loved the audio. It had some great adventurous theme to it (in the mountain level).
Great job overall and a good submission to the Game Jam!