Trapped in the crumbling depths of Sub-Structure 17, you play as a lone climber fighting to ascend a nightmarish underground compound. Navigate collapsing walls, leap over deadly gaps, and dodge brutal traps, all while evading the monstrous presence lurking and creeping from down below. Precision, speed, and smart resource management are essential—tools can aid your climb, but overpacking will slow you down, and accessing your gear mid-ascent means having to let go of a hand. One wrong move, just one fumbled grab, and it’s a long way down.