I normally love this kind of thing, but what a massive waste of time. Starts off great but quickly loses momentum with some bad design decisions. The flamethrowing is great and feels fun; it's why people buy the game. Half an hour in, your flamethrower gets replaced with a "Tesla gun", which is a lot slower and a LOT more expensive to upgrade, which you have to use for "blue ice". It makes no sense, and grinds progression to a halt. It's less fun, and is the only new weapon in the game that you'll use for the next 4 hours. The game turns into many winding tunnels and just a "have I been here before and melted all the walls?", gets dull, and is very buggy.