Why does the door walk away in Level 25?

The walking door is the level's deception mechanic; continue chasing it until the retreat sequence ends.

Are there hazards or keys in this level?

The observed route has a flat floor with no separate key or hazard; the challenge is staying with the moving door.

Mr Potato level guide

hard

Chase the deceptive walking door across the flat corridor until it stops retreating, then enter it.

Layout: The level is a long grey-grid corridor with a continuous white floor. Mr Potato starts on the left and a white arched door stands at the right; there are no visible platforms, keys, spikes, or enemies.
Goal: Follow the moving door until it becomes stationary and enter it on the same flat floor.
Opening: Walk right from the starting position toward the white door; the first approach activates the door's walking behavior.
Danger Zone: The repeated retreats create distance but no separate floor hazard. Stopping or turning back when the door grows legs abandons the only route to the final stationary door.
Mechanics: The exit is a deceptive moving door. It grows legs, displays 'The same trick won't work,' and retreats several times before becoming reachable for a normal entry.

Treat the speech bubble as a cue to continue, not as a failure state.
Keep moving right along the floor and use only short jumps when needed to maintain pace with the door.
Think in chain clears. The best move is the one that sets up the next two moves, not just the quickest current match.

Walk right from the starting position toward the white door.
When the door grows legs and shows 'The same trick won't work,' continue moving right instead of turning back.
Chase the walking door along the flat floor, using short jumps only to keep close when its position shifts.
Repeat the pursuit through each retreat until the door stops using the walking trick and becomes reachable again.
Move into the stationary door to finish the level.

Stopping at the first retreat treats the door's deception as the end of the route.
Turning back or jumping away from the flat floor increases the distance to a door that must be chased directly.

Why does the door walk away in Level 25?
The walking door is the level's deception mechanic; continue chasing it until the retreat sequence ends.
Are there hazards or keys in this level?
The observed route has a flat floor with no separate key or hazard; the challenge is staying with the moving door.