For me, it's like this:
#1 Frostbite Spiders: I'm a major arachnophobe, so I can't even fight the giant ones while looking directly at them. I have to squint. Ugh.
#2 Dwarven Constructs: these guys don't seem to take much damage from bows (my main damage source), so they're a pain to deal with. The Spheres are especially bad, bursting from those vents in the wall and ganging up on me.
#3 Draugr: The big ones have lots of health and can shout at you. Boss fights with them turn into Benny Hill routines more often than not (only with more screaming and chugging health potions).
#1 Frostbite Spiders: I'm a major arachnophobe, so I can't even fight the giant ones while looking directly at them. I have to squint. Ugh.
#2 Dwarven Constructs: these guys don't seem to take much damage from bows (my main damage source), so they're a pain to deal with. The Spheres are especially bad, bursting from those vents in the wall and ganging up on me.
#3 Draugr: The big ones have lots of health and can shout at you. Boss fights with them turn into Benny Hill routines more often than not (only with more screaming and chugging health potions).