Currently, there are 17 underworld factions (with more to come)
You have to purchase the faction on your map, then finish the faction's Quest before you can start its Delve.
Delve as deep as you can in each faction with a full team of faction troops as you acquire them and upgrade them. Build your hoards up high.Renown Points Breakdown for each Faction:
Best Delve Defeated (max 500) X2 (max 1000)
Best Delve with no casualties (max 500) X1 (max 500)
Best Delve using the faction's team X1 (max 500)
Treasure Hoard level X5 (max 500)
Total points possible per faction: 2500
10000 divided by 17 = 588.23 average faction renown. Every new faction they add will make this achievement easier in the future.
18 will average 555.55
19 will average 526.31
20 will average 500.00
For help on scoring higher renown, consult the strategies for
The Exalted achievement in Gems of War worth 1072 pointsReach the Highest Renown Possible in a Single Faction