Go down pretty easily
They should be avoided at all costs if you go in solo. Once you are past the gate and the torchbearers are clear, click the potion. Requiem Lant is up to you whether or not you watch the cut scene but we usually Esc key it. You can simply camp the one that spawns in the first area to the right after getting past the gate once you have returned to your contact and are ready for the Flags. Your only real problem should be the Tower guard as long as you get to him from the left side of the path and do not agro anything else; he will go down pretty easily.