With The War Within 11.2 Ghosts of K’aresh, most players are now in the range of item Level 690 or above. If you have never tried a Delve (Tier 11), this is a good chance to hop inside one, as the content is survivable. I had never played a Tier 11 before. After a successful run, I completed all The War Within Delves in one day. I died 2-3 times — which is not that bad a ratio for 13 Delves.
Kriegval's Rest
Fungal Folly
Earthcrawl Mines
The Dread Pit
The Waterworks
Excavation Site 9
Mycomancer Cavern
Skittering Breaches
The Sinkhole
Nightfall Sanctum
The Spiral Weave
Tak-Rethan Abyss
The Underkeep