I find it hard to believe this fight is not over tuned and was properly tested before put into this game.
Ive tried this fight with 4 different groups, one of which was all on teamspeak with competent guildies, and have deemed it a lost case until you decide to make this fight possible.
The boss constantly stuns you and summons invisible adds you cant detect until they are on you that all hit for an insane amount of damage.
The boss also casts a shield that makes him immune to all damage and when you interrupt him casting it he instantly starts casting it again then interrupt it a second time with another group member and he once again starts casting it.
And as if the fight is not already like banging your head against a brick wall constantly he puts a shield up on himself instantly throughout the fight with no warning besides a buff on himself that does a very high damage (Almost 1 shot) to all melee and cannot be interrupted or dispelled.
All of that with the for some reason very short enrage timer and you have an impossible fight. The funnest part? It is not even a real boss fight, its a mini boss after the first boss and before the second boss. Even better, the group I was with? Our tank and best healer and best dps for our eternity vault that downed 4/5 bosses and got soa to 8% health.
Fix this fight.