This achievement requires you to complete the following in game achievements:
Champion of Blackwood
Investigate the threat against Blackwood and restore peace to the region. This is unlocked by completing the zone questline:
- A Deadly Secret
- An Unexpected Adversary
- A Hidden Vault
- A mysterious Event
- Weapons of Destruction
- Pyre of Ambition
- Heroes of Blackwood
Blackwood Master Explorer
Discover and clear all caves and striking locales in Blackwood.
- Blackwood Cave Delver
- Undertow Cavern Explorer
- Xi-Tsei Explorer
- Doomvault Porcixid Explorer
- Arpenia Explorer
- Bloodrun Cave Explorer
- Vunalk Explorer
- Blackwood Pathfinder
- White Stallion Inn
- Shrine to Nocturnul
- Salvitto Estate
- Fort Blueblood
- Plateau of the Traveler
- Ojel-bak
Blackwood Grand Adventurer
Complete 26 quests in Blackwood
Defender Of Blackwood
Defeat all six world bosses in Blackwood
- Defeat Bhrum and Koska
- Defeat War Chief Zathmoz
- Defeat Sul-xan Ritualists
- Defeat Old Deathwart
- Defeat Ghemvas the Harbinger
- Defeat Xeemhok the Trophy-Taker
Silent Halls Group Event
Defeat Warlord Iaza and his tribe of Sul-Xan warriors in the Silent Halls
Zenithar's Abbey Group Event
Defeat Ra'back the Trap Master in Zenithar's Abbey
A map of Blackwood and relevant locations can be found here:
https://game-maps.com/ESO/Blackwood-Map.asp