Get the piece of gold below the left side of the poles shaped like an 11 first, then grab the piece on the base of the left 1 of the central 11. Now drop to the floor just to the left of the double high wall. The enemies will drop into different sections. You now want to do three things: get the gold in the left and center sections, take gold from the enemies to the right of you when on the floor and lure as many enemies as you can into the section to the left of the 11.
The first two tasks are relatively easy: the last task can be accomplished in several ways. If you run up the center ladder and move over the left, you can wait above the right hand side of the poles (possibly dropping onto the poles) and lure a few enemies at a time from the center section to the left section. You can also pick up a piece of gold or two while doing this.
Once you have all the gold (except the pieces to the right of the 11), run to the top right of the H of ladders in the middle. This will cause all the enemies not in the far right section to move into the left section.
