Which door is the correct exit?

Use the chained door on the far left. The door beside the giant monster on the right is intentionally misleading.

Do I need to defeat or pass the giant monster?

No. Stay on the leftward route with the decoy forms and enter the left door without approaching the monster.

Mr Potato level guide

hard

Sneak left to the safe door while pumpkin and horse-like decoy forms distract from the giant monster guarding the right door.

Layout: The level is one long floor with a chained door on the far left, the potato left of center, and a giant monster beside another door on the far right.
Goal: Reach and enter the left-hand door; the right-hand door beside the monster is a decoy target.
Opening: Move left immediately as the pumpkin and horse-like forms appear, keeping the potato with the left-moving distraction instead of approaching the monster.
Danger Zone: The giant monster stays at the right side near its door. Moving right places the potato beside the guarded exit and abandons the intended sneak route.
Mechanics: Changing character forms create a visual distraction near the left route while the monster remains stationed on the right, making door position and movement direction the key clues.

Identify both doors before moving: the left door is the destination and the monster-side door is the trap.
Follow the left-moving pumpkin and horse-like forms; do not turn toward the giant monster.
Think in chain clears. The best move is the one that sets up the next two moves, not just the quickest current match.

From the starting position, locate the chained door on the far left and the monster-side door on the far right.
Move left across the continuous floor as the pumpkin and horse-like forms develop around the route.
Keep clear of the right-side monster and use short jumps only if a changing form overlaps the walking line.
Continue to the left door with the decoy forms gathered on that side.
Enter the left door to finish the level and trigger the victory screen.

Following the room toward the right door leads directly into the giant monster's guarded area.
Treating the changing pumpkin or horse-like forms as enemies to defeat wastes the distraction that opens the left route.

Which door is the correct exit?
Use the chained door on the far left. The door beside the giant monster on the right is intentionally misleading.
Do I need to defeat or pass the giant monster?
No. Stay on the leftward route with the decoy forms and enter the left door without approaching the monster.