Ren didn't know if the dark elves were leading him into a trap, but they were his best bet to enter the Dark Elves' territory right now and met this Kail'ithal they spoke off.
As Ren and the others turn down a narrow animal trail, a twisted humanoid shape lay on the path ahead, a bow held tightly in its closed fist, its skin gray and lifeless. A huge, grotesque-looking boar was gnawing on one of the corpse's hands.
Again if Ren had the ability [Stealth], he could have surprised the boar into trotting away, but otherwise, the cursed Giant Boar turned its hateful eyes upon them, lowered its tusk, and attacked.
The boar charged towards them with incredible speed, but Ren was able to dodge its initial attack and strike it with quick-fire magic.