You must survive against waves of enemies and rockets while the floor beneath your feet turns into either ice or fire tiles. Thin the herd of enemies and turrets with your blaster while you try and hit the temperature regulator switch to clear away the tiles.  

Tip: If you're having trouble shooting enemies, try holding 'Shift' to lock the direction you are facing.  If the game is too easy, try hard mode.  

Submitted for the Godot Game Jam of June 2018.