Well this is the token novelty encounter.
It’s pretty easy but here’s some details for you;

Talk to the gnome to get your Rocket Pack and equip it
Do not stand on objects like the roof or the sides (trying to make sure adds cant hit you) we found that this can cause adds bugging out, being unable [...]

When we first did this fight I was left feeling pretty disappointed, he looked cool but the trash leading to him was 10 times worse

Phase 1

3 tanks are needed although only one needs to actually tank him
5 healers seem to be enough, with little spike damage going on it’s easy mode
Move from ice
Spread [...]