×You must pass through those breakable walls near number 1 by breaking them and stepping onto them from the square to the southeast. Once you have gone through both crumbly walls, step off to the southwest. This leaves enough raised trap doors for the goblin to follow you through. There are more crumbly walls a few squares to the left and south of number 1 that you can use to get the goblin off your back once you have gone through. If your having trouble getting the goblin off your back, see if you can find a place you can get him stuck for a little to give you enough time to break the walls and make it through.