I liked this a lot! Using the animal to help look for batteries was a really good use of the theme. One thing I would recommend is making the animal's role a little more clear from the start, maybe by adding a tiny bit more instruction. It took a second to understand that "press e to search for batteries" meant having the animal go look, and "nearest battery is too high or too far" had me thinking I had to climb for a while before realizing it just meant the animal couldn't find a path. Once it clicked I really liked it though, and overall I think the mechanic worked out really well! Great job!