Try the albino bat in the tower of bats alone. In this challenge…
… this was by far the most extreme fight i have done!
Above all we must not forget one thing. If we are going to speak about skill fights, these fights must be done SOLO!
Right now the exile lands has numerous bosses that even with the highest gear are extremely difficult to win. Red mother is extremely easy and predictable, red hatchlings can become really annoying especially when they bite, but they are still very predictable!
Extreme fights are
1 rockslide
2 jhil children boss (they hit really hard and rotate when flap their wings now)
3 Albino bat (with higher hp can go easily on number one)
4 Snake bosses, omg they constantly hit
5 last floor of sunken city
6 Volary of harpies
7 corrupted wolf, the miniboss, the great boss in Siptah staggers
8 corrupted sabertooth
9 Den, were hyenas in the middle, you just cannot go easily alone there
10 i will say white tiger, but with it there are many bosses in number 10. Thunder foot, khari skeletons and the list goes on…
So the content exists whatsoever!
The choice exists too!
Now we are small beasts both on melee and archery 
. For example on rockslide for me it’s 1 on 100 in melee fights (it has to be flawless) and 9 on 10 when i go archer. If this boss didn’t had these unreasonable hits under his feet it would be very easy. It’s like a magnet even if you are away from his feet which is absolutely wrong.
It doesn’t need skills, just repeat (stubbornness) , nothing else!