How did you guys manage to max Nightfallen, it's been a pain so far. I mean I only started with Legion two weeks ago, so I'm obviously behind the rest of the playerbase but it's looking grim. 8/11 story quests done, exhausted the questhubs and doing all the world quests every day. Still only at 2/12k, so a long way to go before the next story part opens up.
Withering Army maxes at 425 rep, get that score.
-Go slow and open all of the glimmering and other chests you can (and save those chests until AFTER you get to the point where you want to be "done"!).
-The biggest thing you can do is get the small chests that buff your withered. 25% damage and 25% health (or 50%? Whatever) are huge increase in how things work in battles. I can get Dro down from 80% to dead in one 4 second stun.
-You can skip elfbreaker, just wait for him to path to the broken column, and run your ass to the stairs. Don't stop to fight any spiders, just drag them with you to the first landing, then turn on the army-killing (without using berserk) by engaging the spiders as you can. Run up to the big spider to stop the spawns.
--Actually, there are a bunch of skippable bosses, but I do most of them since I don't lose much health with the stuns and focus fire.
-Get all of the withered you can. My best run was 46 withered total, with no deaths (maybe the Zerker died? IDK). Some spawns are static, some aren't. Find the static ones and make sure you get them every time. The more withered you have, the easier it gets.
The other thing beyond the training...
Do all of the sidequests... some of the WQ are gated behind it. Did you free the dinosaur (from Nighteyes in the menagerie)? Did setup the pre-reqs for the court of stars killing (Libertines et al)?