We're glad you like it!
Yes, a tutorial would definitely be nice; we were a little short on time (story of everyone here's lives, lol). If we ever do anything with it further, controls will definitely be spelled out intuitively in the game itself (though, they are on the game's itch.io page, just not the GMTK Game Jam submission page). Fwiw, we really like how you did this in your game's menu. Very clever!
Thanks for playing!