Nice Game, I liked the idea of the batterys and the time pressure it ads, well done.

Really interesting idea and the graphics are also nice! You could add more mechanics to this concept to add variety, like maybe swinging the orb also makes you jump higher. Good work!

I enjoyed the swinging ball / charging mechanic. Having that indirect way of affecting the doors - and other mechanics if this game was extended. However, I found that the character could not jump high enough to get up onto the blocks. Specifically,  the only way to get up onto the block is using diagonal jumps / exploiting a hitbox of the ground - very hard to do. Also, it felt like the charge drained very fast.  In the last level, I charged the first two doors, and went to charge the second set, and found myself unable to return. However, this may have just been the wrong solution.  Also, the checkpoint at the last level does not return to the last level, but rather the third level.

Nice job on finishing the entry for the jam! The game feels somewhat counter-intuitive (at least at the beginning). It took me some time to understand how buttons and charging works. Also, the movement (especially jump) could use some polish. However, the idea does fit very well the time and also has a good twist to it. If you can make the game easier to understand and control, I think you can go quite far and stretch the concept way more.