Use the hook again on the platform to lift it back up. Use the biscuits on the platform. Twenty will step on the platform. Use the hook on the platform to make the dog fall into the water. Go back to the fence and climb it.
Warehouse Examine the signs one by one.
Go left all the way and use the ladder to go up. Use the window near the fan. You'll take a look inside. While you are looking inside the warehouse, use the hook on the fan. Quickly this time, use the ladder to climb up before the indian exits the warehouse.