That's 40 Challenges! I tried 5 times before I killed it.
The PoB is from the fight. There are still a lot of upgrades that can be done if you have the currency.
PoB - https://pobb.in/jdWNAO0r3Hjk
Good Luck on the rest of your journey.
Life
4851
Mana
91
Energy Shield
422
DPS
28M
Effective Hit Pool
59.70K
Chaos Res
33
Fire Res
76
Cold Res
75
Lightning Res
75
Armour
14K
Evasion
0
Block
0 | 0
Crit Chance
100%
Crit Multi
447%
Rage
0
Strength
383
Intelligence
168
Dexterity
193
Ward
0
Item Quantity
0%
Item Rarity
0%
Movement Speed
136%