There’s not a specific location. The dark tribe is simply a type of orc. If the overlord of an area is from the dark tribe, then the fortress in the area will be a dark tribe fortress.
You can only recruit orcs your level or lower, so first step for that gear is to get to level 40 or higher. Then just wander the world, grind through some orcs until you find one of a decent level, from the Dark tribe, and, of course, is cool.
The Dark Ranger Dark Talion is the skin you unlock for Talion during the final mission of the Shadow of War storyline.
Gain the Armor of War by killing a Legendary Warmonger Tank or Warmonger Destroyer. Recover X health while on fire. X health recovered per kill. Gain the Cloak of War by killing a Legendary Warmonger Beastmaster or Warmonger Berserker.
SHADOW OF WAR – DEFINITIVE EDITION | All 9 Tribes (2018 Update)
The 5 best orcs I butchered in Middle-earth: Shadow of War Nazu the Bard. Some orcs opt for a serrated blade, while others take pleasure in swinging a flaming brand. Noruk the Obsessed. Noruk the Obsessed is the orc equivalent of Papa Lazarou, the creepy collector of wives from BBC comedy The League of Gentlemen. Buth the Maggot. Grisha the Ruinous. Tuka the Unashamed.
You can actually level up orcs by letting them kill you if they’re an enemy, too. They’ll go up a few levels and even potentially earn a new trait or two in the process, and this is probably a faster, easier way to do it than dominating them first, as long as you can bear the humiliation!
Talion Becomes a Nazgul. The biggest bombshell from Shadow of War comes at the end when we learn Talion’s ultimate fate: Talion becomes one of the Nazgul. After he’s abandoned by Celebrimbor, Talion begins to die.
Use Light attacks to blind Talion and attack him with quick base attacks to build your Might. When your Might is full, use Executions on him to take a bigger chunk of his HP. Kite him around and away from his followers. Use the whole big area you are given for this boss fight.
No, Talion appears only as a game character, in Middle-earth: Shadow of Mordor and Middle-earth: Shadow of War. Even characters that appear in LotR are presented differently in the games. For instance, Celebrimbor was never a wraith, and he had nothing to do with the making of the One.