What's the fastest way to level Undaunted? ... You can also level it by completing the daily delve quest given to you by Bolgrul in the Undaunted enclave tent. The Undaunted skill line levels a bit when you complete a dungeon for the first time.
What levels up Undaunted?
What are Undaunted ranks? As with all the other guilds, you can level up to rank 10 with the Undaunted by receiving reputation. Undaunted Reputation is gained by completing either Normal or Veteran Dungeon's Achievements, as well as Trials in Craglorn.
Do public dungeons count towards Undaunted?
Running public and group dungeons you haven't done yet will give you undaunted, along with completing the daily pledges if you're level 45+. If you're on PC/Mac you can use the Urich's Skill Point Finder add-on to keep track of which ones you've already done.