The premise of this game seems very interesting. I can imagine this to be a fully-fledged game with interesting story about a robot and his quest to extract materials and probably information about the world with a limited amount of time to return to its base and recharge.
A feedback I would give is that when our character gets hit, there is not visual or audio feedback to know if it got hurt or not so maybe add in some sound effects or visuals when getting hit.
Not sure if you're interested in developing this further but overall the gameplay was fun and wanted to learn more about the robot and the world its living in.