the.com/walkthrough
Someone who already solved it, narrating so you can pretend you did too.
means A step-by-step guide that escorts you through a task, game, or process from start to finish.
from From the literal act of walking through something room by room — theater rehearsals and building inspections used the phrase before gamers and tech adopted it for hand-holding instructions.
Theater rootsOriginally a relaxed rehearsal blocking out moves.
Real estateThe final inspection before you sign and panic.
Gaming ubiquitySpoilers wearing the disguise of helpfulness.