Climb. Don't look down. Find the crystal.
Alive Mode drops you at the bottom of the Golden House with one job: climb. Every ledge, pipe, and rooftop between you and the top is part of the same uninterrupted climb -- there's no second chance run, no checkpoint shortcut. The crystal that powers the house went missing somewhere above, and the higher you get, the more the house starts to feel like it's watching you back.