The Lost City - Chamber of Exorcism Challenge Tomb (Part 1)

The entrance to the final Challenge Tomb is in the clearing at the northeast corner of the city. There are cave and bear icons in that area on the level map, so you can guess what's ahead. Go through the large archway and follow the tunnel to a cave with a huge bear.

By now you're probably a pro at fighting bears. Hit it with a few poison arrows...

...then a couple of rifle or shotgun blasts—or a couple of grenade arrows (not shown)—and that should do it.

Collect 2 bear skins (he's huuuuge!), plus a few deer hides from the bear's kill. Then break down the crumbling wall at the far end of the cave.

Follow the tunnel to a large cavern, where you'll find a stack of gold coins and a box containing a relic (1/10), a Blue Glass Vase from the Icons of Kitezh set. Exit out the other side of the cave.

Continue to another cavern with a ledge overlooking a pool. Dive in, swim across to the far right, and dig up a survival cache (3/6) buried behind a natural stone column. The flashing light reveals its position, but you can also wait until it's marked on your map to get it.)

After digging up the cache, turn to face the ledge where you entered. You'll then spot a container of cloth, the Explorer Satchel (1/2) for this area, and another relic (2/10), a Soldier's Pendant from The Athanatoi set.

Swim across the cavern...

...and through the flooded tunnel to the southeast.

When you're able to surface, climb out of the water on the right...

...and follow the path down to the Geothermal Cavern Base Camp. Grab some fire arrows and dig up another survival cache (4/6) in the corner near the campfire.