This was a really neat little puzzle game. I like how you had a help file with instructions, but I can see some additional hints can be helpful in case some people get stuck. If my other half didn't walk in on me while I was playing and tell me to connect the battery to the switch next to the door, I probably would have to quit in the first room. Love the simple pixel art you have here! Took me a while to figure out the barrels were bombs, but it was extremely satisfying once I figured out how to set it off with the battery!
Great job, easily one of my favorite of this jam so far!