From a start door, go to the left and down to the lower.
Move toward the left and swallow a wooden box beyond a ladder.
Then go down to the lower from your left side with swallowing a box.
There are two trap hole on the right and drop two wooden boxes into the first hole.
Bring another wooden box from the top of the ladder and drop it into the second hole.
After that, fall down to the lower floor and go toward the left to the left edge.
When you go down again, you can find a key next to a door.
After you got a key, go down to the bottom from the right side of a door and go forward to the right as long as piles of iron boxes.
Make steps with nearby wooden boxes and get over them.
After that, climb the left-side ladder.
Go to the left and climb a short ladder by using a wooden box to get to the floor where a warp door entrance.
Climb short ladders twice on your right and then, go to the right.
When you fell down next to a paralyzer, climb a ladder and go to the upper floor.
Climb a ladder again and get to the floor where eight wooden boxes are.
Make stairs with them to get to a goal door.
In this stage, there are fears that a warp door puts you back in your progress.