If you've managed to overcome the difficult final boss (at least at the launch of early access), you'll likely have come across the Sizzling Key in Grounded 2. Or, perhaps you've stumbled upon the locked chest in Pine Hill that requires it. Either way, it's not immediately clear what you actually need to do with either. In fact, it's even more complicated than the Frostbitten Key in the Ice Cream Cart.
Not only do you need to beat all the content in the early access version of the game, but then you need to trounce more wolf spiders and explore the scorching Fire Pit area. Before you can complete this puzzle, you'll need to have Omni-Shovel II, since it's a level two buried treasure. Once you've got that, here's what you need to do.
