The Bricklayer's puzzle

Grunt(z) What to do to solve the mini-puzzle
Bricklayer #3
Gauntletz #4
GooberStraw #5
Bricklayer #3 (in the lead) pickz up the Toy and givez it to the aggressive enemy grunt attacking him.
Then he proceedz to quickly lay a Brick on the Foundation tile at the 'door' of the enemy's 'barrackz', trapping three enemy gruntz inside.
Bricklayer #3 standz on the eastern PMGS and GooberStraw #5 standz on the western PMGS , lowering the PP .

Gauntletz #4 breakz the Ice Crystal east of the PP .

Bricklayer #3 tradez placez with Gauntletz #4.
He navigatez through the RSBz using the Arrowz and then followz another RSB across a YTS , changing a Two-Way Arrow (TWA) to reverse its direction before the RSB reachez it.
He layz a Brick to remove the RSB and getz the Boomerang .
Step on an Arrow to exit the area. Time to empty the enemy barrackz area.