Heist Monster "Observer totem" is hard to damage with forbidden rite

Dear all


I am not sure if it is intended, but whenever I do heist with my Cyclone CoC forbidden rite, the only mob I cannot kill easily is the observer totem that raises alarm level. I have nearly all chaos damage on my skill and I just cannot kill it fast enough, while all other mobs I can pretty much one shot.

On the other hand, the heist rogue I brought along could easily two shot the totem.

Is this intended? THe mob says volunerable to chaos damage..

THanks.

are you hitting it after the rogue reveals it(which their AI is terrible at doing)? or including the before(aka in the state where it cannot be damage)