Defeat the Witch-king and reclaim Minas Morgul.

Unlock all player skills.

Strike a Follower until he's had enough.

Purify all the Haedir.

Defeat Helm Hammerhand.

Defeat Suladân.

Recruit a Follower of every Advanced Class.

Turn all of a Warchief's bodyguards (minimum 2) into spies, then confront him.

Send a Follower to support another Follower in a Nemesis Mission.

Conquer the Fortress of Núrnen.

Destroy a Monument.

Defeat a Warchief.

Kill a Pillager Captain.