Rob: The Silmarillion. Anor is the Tower of Guard in Beleriand, of the Kingdom of Gondolin. Originally, Minas Tirith was Minas Anor, the tower of Guard. But the name originated in Beleriand as the keep guarding the city itself (I believe)
Slowpoke: Killing dozens of demons. Wounding a god. Going into Hell itself to retrieve a jewel from the crown of Satan. Stopping said god/Satan from entering a realm. Beating Gorthaur the Cruel (Sauron as he was known to the elves in the First Age, for those non-Tolkien buffs 🙂 ) in a magic duel.
And I left out some FAR more powerful people. Like Elrond's father (His name slips my mind atm among all these others)