Jumps in difficulty, Frost Troll near High Hrothgar : V - Skyrim
Frost Trolls are a species of Troll that behave like their more common cousins, though they are stronger and much more resilient. Just like ordinary trolls, they have a weakness to fire. They are especially fond of caves, but may also be found in abandoned ruins like Labyrinthian.
Return to V - Skyrim. People used to complain that Oblivion could be beaten at level 1. Pilgrims along the way warn you about wolves on the way up and the snow wolves provide a fairly good challenge but not like that frost troll. There should be more warning!