Love the idea a lot! Sometimes all it actually takes is a really good concept to create appeal for a game. An arm flexing itself to move is a pretty original movement mechanic and creates some fun ideas and potential for how to flesh out the game - pun intended. The execution is a little bit janky, but adds to the charm. Some ideas could be that swinging the outer fist segment could damage enemies without needing to flex - that way, you have a punch up and a movement system working in concert! Always a blast to see fun ideas in jams being experimented on that you wouldn't see anywhere else. Cool stuff!