Neat concept, and I love the art style! I found myself most of the time pressing space bar out of instinct to try jump, but ended up toggling the laser instead. Maybe a mouse button will fit better for this mechanic, since you also use the mouse to aim. Showing the cursor (or adding a custom cursor) in game could be a nice addition as well, since its difficult to know where you're aiming before you turn the laser on. Otherwise, enjoyed playing this one!