Move Arrows / WASD  ·  Aim hold Up (diagonals too)  ·  Jump Space / Z  ·  Fire X / J  ·  Pause P  ·  Mute M  ·  Grab the gold rings for score streaks · shoot the cyan star-rings high in the sky · climb the living clouds for sky treasure  ·  Title screen: arrows / D-pad / tap a level line to pick Level 1, 2, 3 or 4  ·  Level 2: ride the bubble streams up, mind the lurkers in the dark  ·  Level 3: crouch to brace when the dust wall rolls in — and when the dunes give way, run  ·  Level 4: time the laser grids, watch the drones line up their shots — and on the ascent, climb, the core rises behind you  ·  3 hearts per mask — but a pit still costs the whole mask