From a start door, break the left-side wooden boxes and climb the leftmost ladder.
Two appearing boxes will fall.
Go to the upper bricks floor by using them as a step.
Break four wooden boxes on your right first, and then break six wooden boxes ahead too.
After that, climb the right-side ladder to get a key.
After got a key, descend a ladder, and now climb the other ladder on your left.
When you get to the upper floor, move to the left.
An appearing wooden box will fall.
Set the fallen box on the ladder you climbed up in order to go up to the right-side bricks.
Go past a door and break six wooden boxes next to a ladder.
Then climb the ladder appears on your right after you broke boxes.
A goal door is ahead of the top of the ladder.
This stage has a lot of wooden boxes and the key to early clear is to break one wooden box after another.