Take the elevator to floor 6. That is the goal. But the elevator does not reliably take you where it indicates it will — a hotel, a dungeon, a hedge maze, a moving train are all possible arrivals. The floor you land on must be validated before you proceed: if the elevator's display says you are on floor 3, then any evidence in the environment that places you on a different floor number means the floor is invalid. Press the emergency button when a floor fails validation, or start the whole journey over from floor 1. Numerical clues are embedded in each environment, some obvious and some not. Find them, check them, and move on only when you are certain.