Me friend Uchek is in de cave already. We set up three shrines inside. All you gotta do is flush out de bad juju from each one, mon.
Go inside de cave here and talk to Uchek. He put you in a trance, put you in de spirit realm. Tread carefully! If you see a ghostly beast, you don't be panicking. Shine de Light of Souls on de beast for a moment or two, and de light will send 'em away for good. De light will keep you safe. Now go cleanse de three shrines!
Each "shrine" is really just a small bonfire; there are three within the cave system. This does not include the one Uchek is standing at. The cave has three routes (left, right, center) and each ends at a shrine.
Once in the spirit world, players can see a variety of undead, including banshees and wraiths. Players are not able to target them, but they do minimal damage. The best tactic is to run through them to a shrine, then use the Light to destroy them in one move.