Collecting the Duergar Supplies is one of the many optional objectives that you can complete, you can find it during the Companions Of Icewind Dale – Halls Of Duergar mission
There is a total of 10 Duergar Supplies that you can find altogether, these are usually found all over the entire map.
Below is a simple guide on their locations
DUERGAR SUPPLIES #1
- MISSION OBJECTIVE: Find the elevator’s control lever
- GUIDE: From the start of the mission head down the stairs and turn left, jump over the spikes to find this first one.
DUERGAR SUPPLIES #2
- MISSION OBJECTIVE: Seal the duergar breaching tunnel at the bridge
- GUIDE: At the checkpoint with the head statues, continue North and jump over the platforms. The next set of supplies can be found at the end here and to the right.
DUERGAR SUPPLIES #3
- GUIDE: From the last collectible head through the teleport on the left, then head left and up the poison platforms. The next one is here sitting on a platform
DUERGAR SUPPLIES #4
GUIDE: Continue up the hill now from the last collectible in order to find a bunch of enemies. After dealing with them you will find the supplies to the left of the area
DUERGAR SUPPLIES #5
GUIDE: Head back down the hill now to continue the story, head through the doorway into the foundry. Keep to the left to find a breakable wall revealing a path of spikes. The supplies are beyond those spikes
DUERGAR SUPPLIES #6
GUIDE: Turn to the opposite side of the room now in order to find a set of ladders that you can climb up, do so. The supplies are up here and to the left.
DUERGAR SUPPLIES #7
GUIDE: From the last collectible turn around towards the platform with the explosive barrel then drop down to see a plank that you can cross, do so. The supplies are on top of the ledge here
DUERGAR SUPPLIES #8
GUIDE: Ride up the elevator now, the supplies are immediately to your left.
DUERGAR SUPPLIES #9
GUIDE: From the last collectible head left into the green poison room, from there continue all the way down to the bottom. You should be able to spot the supplies sitting on top of a pool of poison
DUERGAR SUPPLIES #10
GUIDE: From the last collectible continue on as normal, when you find yourself turning right you should be able to spot some ladders, climb them. The final set of supplies can be found up here