Decided to go ahead and try an ice spear witch..ice spear is OP :P
i was expecting to have trouble with Brutus purely down to the amount of movement you usually need unless you are a bit tanky but once you get a good crit on him with ice spear you can keep him at a distance and just spam it...even though the freezes don't last long on a boss it's long enough for the next one to land.
Next stop Merveil...so how she likes her own medicine.