Cor Angar sends you deep into the Orc Cemetery to bring back a Focus Stone. 
Talas walks you to the entrance and then leaves, so the rest of the run is on you and a captured Sect digger named 
Baal Lukor. You free him, piece together a two-part key, push through room after room of Orcs, and claim the stone from a fight that goes sideways fast. Pack heavy before you set off.
The Orcs in here come in waves and hit hard, so kit out properly before you leave.
- Plenty of healing potions.
- Plenty of food.
- A bow and arrows.
- The strongest armor you can wear.
- Enough supplies for a long string of Orc fights.
Save often. Some of these fights can turn on you quickly.
Pay attention to the route Talas leads you in on. He leaves once you arrive, and you have to walk back out on your own.
Head into the Swamp Camp temple and find Cor Angar. Ask him where the Orc Cemetery is. The conversation triggers a scene and points you toward Talas, who can take you there.
Leave the temple and, at the bottom of the steps, go right. Talas is sitting in a small hut close by. Talk to him and ask him to lead you to the cemetery.
Stick with Talas along the route. When you reach the cemetery a short scripted scene plays, Talas heads off, and you continue alone. Enemies are waiting nearby, so be ready. You may also see a Templar fighting an Orc off in the distance; help him out if he needs it, then loot the bodies once the area is clear.
At the bottom of the area is a large skull-shaped rock, and you open it with a bow. If you do not have one yet, a Skeleton on the main path nearby is carrying one.
- Face the skull rock.
- Shoot the target on the left.
- Shoot the target on the right.
Both targets have stones set on them. Hit both and the skull's jaw swings open, letting you into the Orc Cemetery.
The first stretch throws several Orcs at you, so save between fights. Once it is clear, look to the right for a row of prison cells. Search them and loot the corpses inside, since a few carry useful items.
After the cells, go left into the one with a small gap at the back. Squeeze through the gap and climb the rear wall to reach a handle at the top, then pull it. It is not obvious what it opens, but pulling it now means you will not have to backtrack for it later. Drop into the cell below and carry on.
From the cell area, work toward the back corner. You are on the right track when Orcs appear in the next room. Cut them down, loot the bodies, and push through the corridors into the room beyond. There you will find Baal Lukor in the middle of his own fight with a group of Orcs. Help him finish them off, then talk to him and run through all of his dialogue. Once you do, he joins you.
Ahead are two rooms, one on the left and one on the right. Take the left one, the green-blue chamber. Kill the Orc at the far end and loot everything to find Half of a Key. If Baal Lukor is trailing behind, wait for him to catch up and speak with him again.
With the first half in hand, go to the orange open-floor area and drop down. More Orcs are waiting below. Move to the right and take note of the lever mechanism there, then keep going all the way right through the corridor and into the next room, fighting through the Orcs as you go.
At the end of this section, look for bodies on the floor by a small fire on the right. A lever is lying among them, so pick it up, since you need it to open the next area. Clear the surrounding rooms for loot before you head back.
Return to the lever mechanism and insert the lever. A body that was out of reach becomes accessible. Loot it for the Other Half of the Key, then go back to Baal Lukor and tell him you have found the second half.
Follow Baal Lukor for a stretch and he leads you to a large door. After the scripted dialogue the key is handed over and the door opens.
Inside is a big open room packed with Orcs. Take it slow and clear them out. At the back are ruins you can climb; head up, cross the bridge, and you reach another door. Baal Lukor uses the Focus Stone to open it.
Before you step into the main chamber, look through the side rooms for chests and loose loot. When you are done, go straight ahead into the main room and a major cutscene plays.
After the cutscene, Baal Lukor loses his mind and turns on you. Put him down, then loot his body.
Take the Focus Stone from Baal Lukor. You need it to get out of the cemetery, so do not leave without it.
Go back to the large door where the Focus Stone was used earlier and use it again to open the way out, then make your way back to the Swamp Camp.
Back in the Swamp Camp temple, head to the very back and speak with Cor Angar and 
Cor Kalom. A final cutscene and dialogue sequence plays out. Once you have exhausted it, the Orc Cemetery quest is complete.
Before you leave, make sure you picked up everything that matters.
- A bow and arrows, needed to open the skull entrance.
- Half of a Key, from the left green-blue room.
- The loose lever, from the bodies by the fire.
- The Other Half of the Key, from the body freed by the lever.
- The Focus Stone, looted from Baal Lukor.