the most highest and most hardest enemy you ever confronted.

I was on the island on solstiem.

And there was this big horrible powerful dragon preist I would never confront at even a level 30 level.

It summoned one of those death reaper things, as in like with Mirraak.

they suck so much energy out of you , and send so many electric like health obsorbing zaps from you.

I have never confronted something as powerful as that. Since I was lucky I had a follower who was powerful enough to distract one of them.

This dragon preist had ice health, stamina obsorbtion.
Every time he would hit me with an ice shock, I would get zapped as well and almost 50 points of health was drained from me.

It was extremely the most hardest thing I have ever faced.

My best word of advice for you is...

Do not do the dragon born dungeons at a lower level. For it will be the most hardest thing you would ever face.

I guess many of you other guys who have done the dragon born quests, have found very hard enemies to kill at the most highest craziest levels.

Please tell me about it, I would like to know so I am aware of powerful enemies.

no specific enemy stands out, but when you're on a relatively low level facing half an army of the undead and an angry giant (with his mammoth escort), a dragon trying to join the party makes things a little more dicey than i would like.

I feel like the random dragon attacks should be adjusted to avoid such incidents. I did not enjoy the 5-10 minutes of backtracking i had to endure to avoid it.

Hevnorak in Valthume. One of hardest places I visited.

I don't remember what they're called but this weird monster thing in the Apocrypha. The normal ones are okay but there was this big blue one that was hard. I barely fracking scratched it when I stealth-hit it with my dagger, and I believe it was regenerating it's health. I forgot how I killed it if I did.

Unless I'm really on my game the bandit leader in lost knife hideout kills me frequently. You know, the one locked in the cage by his own men? There's a real gladiator feel to the fight when you enter the cage too, I love it.

Children

Karstaag on Solstheim kicked my ass from here to kingdom come. For me he was beyond hard.

Kvenel the Tongue in Volunruud. I was bored and I was at a relatively low level because I had just started a new character. I like to just wander around Skyrim and see what cool little things I could find and I wandered into the place where you meet Amaund Mortierre from the Dark Brotherhood Questline. I wandered deep into the crypts and struggled to defeat the Draugr Deathlords and then I found this guy. He is literally the hardest person to beat. It took me an hour of strategizing and using Onmund as a meat shield to defeat this guy. I think I ran out of Volunruud once too just to let my magic regenerate. Kvenel would materialize in the most random places and it scared me so much. Never. Again.

The Dragon in Blackreach is pretty tough. I died about 5 or so times trying to kill him. It was pretty hard considering I had just fought off Dwemer Machines, Falmer, a Giant, and some Slaves. I also ran out of potions and had to fight the Dragon without my sword (I accidentally dropped it while unloading unwanted gear and couldn't find it).

The Ebony Warrior in a devoted melee duel. That guy is badas*. My first attempt, we fought each other to an impasse, all the way down the mountain, across Whiterun Hold, and into The Reach. He eventually Fus Do Rah'd me off an up-rise and I died from the fall damage. After that, he killed me at least 30 times! I eventually got two badas* swords and a bunch of buffs and managed to kill him in a crazy dual wielding bum rush.

I never had much trouble with one-on-one fighting in Skyrim, especially with my mage build, but multiple falmers were always tough for me, especially around mid level (anywhere from 30-50). It seems like at that time most enemies are maxing out, while you are still quite a ways from attaining the goal you had in mind for your character build.

For dragon preists....

magical resistance is always best.... choose a breton race, and always use alteration and light armour.

That is what I am going for next after my wood elf is completed.

A new generation build for taking down dragon priests and deathlords, in which are fluffin hard as hell to defeat.

always use......

enchanting#
fire resistance#
ice resistance#
shock resistance#
magical resistance#

alteration#
summoning conjuration# " to distract dragon priests"

Morokei remains one of hardest to me but the Ebony Warrior was a nightmare when i first challenged him, he literally has an answer for everything!! Ranged fight him and he'll shout u off the cliff, melee fight him and he'll decapitate u, hide and pop shot with arrows.... lol just try it.
Only thing that seems to work against him is spamming powerful conjurations and staying out of site and even then it takes a long time.