Crossing the Drawbridge.


Full Solution:


Have Stinky step on the first collapsible bridge tile & then steps back; push one boulder to the side and the middle one into the water. Then go back to your starting position, and between Loof, Peegue & Stinky, push another boulder into the water. Stinky then steps on one more tile; go back & repeat the process with a boulder & then the metal box. Stinky then crosses over and fills the remaining 2 tiles after completing first the boulder puzzle, then the box puzzle (see Screenshots).