So, I finally cleared the first Citadel

did a couple of trades too-bought two quarterstaffs, one divine each. One has +30 INT attributes, and the other has none. I just learned, after meddling with my respect (GGG really needs to add better notifications for this), that I can change builds based on my weapon.
So I created a defense and offense build. If I get hit, I swap to defense mode (it has +/- 2k more ES). Then, I can use Ice Wall to switch back easily to offense (because I have that quarterstaff with +30 INT). Ice Wall also acts as my defense, on top of Blasphemy + Time Slow Curse. It lets me partially divide the enemies. XD