I have done the impossible!

[Kastel]

First thing is the map, i opened a few not sure if there are coffer items there. To get to mine shaft zone, you have to pass through the area in Oldton where you have to hit the 3 rusty levers and cross the bridge. As for coffers, some pop in places where you need to cross that bridge in oldton to get to, while some i had to drop down and couldnt get back up to that area without going around. For working the furnaces, just wait until Gob turns, then Drop a firesand in the furnace, the gates will change. Then just use tonko, if you get aggro just hide ;p