Indeed arrow keys are working, great! At last I could enjoy your game, excellent visuals and sound, love the small scope perfectly fitting the jam. It's fun, and my kind of difficulty: first try was a mess, then I could make it once I understood what to do. Didn't feel the need for a tutorial. Sure it cries for a post jam version with more levels ;). Good game with simple concept and solid gameplay, and again the art is what really sells it. Really love the palette and simple, very legible graphics, as well as the tunes and sfx.