I was suprised at how much I enjoyed this! Everything being tied into energy worked well and the vibe with seeing all the robots and empty pods at the beginning was very cool. One thing I might suggest is that reloading was a bit confusing at first, and you could get rid of the need by having every shot take a small amount of energy.
Also currently you can cheese the combat by jumping onto the head of one of the enemies but not a big deal for a game jam game.