Grab pliers and bellow from underneath.
Grab key and hammer.
Move barrel to find Gold Ingot underneath.
Use Hammer on Ingot then pick it up.
Use key to open Box and grab bowl of water.
Place bowl of water next to picture to get Gold ingot.
Dump 3 Ingot pieces in pot, set bellow on table.
Put key in water and use pliers to pull out.
Use key to unlock door.