Good start of a game here. You've created a nice environment and the endless nature of it is good. I thought the mechanic of building up your weapon was great. It was a bit confusing to me as to how I was supposed to do it, as it would show me, for example, the outline of wood, but then it wouldnt collect wood until I had collected a tire/rubber band. It definitely feels like theres some good potential here, but I think it will take much longer than the time afforded in a game jam to flesh it out. Keep going - good job.