Good effort! Unfortunately it has a lot of bugs. Most obstacles around the batteries can be clipped through and I can't go to the crystal when I uncover it so I can't progress to the next level unless I refresh the page and select it. Another thing is that the player movement is very sluggish and unresponsive. I see you developed this by yourself so you still did a good job for such a short jam! Maybe try joining a team for your next one, it's a lot of fun working in a team and it might allow you to focus on working on just one or two features but you can develop them better.