I made an account to tell you that I really enjoyed this game. The concept is very interesting and I would totally like to see a full version of this, although with some stuff being fleshed out as well. There's no indication of a few of the mechanics and a huge limiter is the time limit from the battery. It doesn't really do much other than rush the player, since the checkpoints are sparse relative to the time given. It reduces the minimalist aesthetic appeal of the environment by forcing a focus, more on completing the objective than appreciating the environment. Other than that, I loved the idea and played it from start to finish. Thumbs up from me!