Eliminate 30 enemies in the air

Defeat a Lost Warrior

One has walked in Mordor.

Liberate 30 slaves in 180 seconds while riding a caragor.

Complete all Acharn Legend Missions.

Collect 100% of the Artifacts and listen to their memories.

Perform an Execution on a flaming Berserker.

After an uruk kills you to become a Captain, help him become a Warchief, then kill him.

Kill The Tower.

Help a Captain survive a Recruitment Power Struggle, and then kill him and all his new recruits.

Start a Riot by commanding a Warchief to attack another Warchief.

Brand all 5 Warchiefs.