What are all the Achievements for Oblivion?

Answer 1

Unlockable How to Unlock Associate, Fighters Guild (10) Joined the Fighters Guild. Arch-Mage, Mages Guild (50) Completed the Mages Guild Questline. Master-Wizard, Mages Guild (10) Reached Master-Wizard rank in the Mages Guild. Wizard, Mages Guild (10) Reached Wizard rank in the Mages Guild. Warlock, Mages Guild (10) Reached Warlock rank in the Mages Guild. Magician, Mages Guild (10) Reached Magician rank in the Mages Guild. Conjurer, Mages Guild (10) Reached Conjurer rank in the Mages Guild. Evoker, Mages Guild (10) Reached Evoker rank in the Mages Guild. Journeyman, Mages Guild (10) Reached Journeyman rank in the Mages Guild. Apprentice, Mages Guild (10) Reached Apprentice rank in the Mages Guild. Associate, Mages Guild (10) Joined the Mages Guild. Guildmaster, Thieves Guild (50) Completed the Thieves Guild Questline. Master Thief, Thieves Guild (10) Reached Master Thief rank in the Thieves Guild. Shadowfoot, Thieves Guild (10) Reached Shadowfoot rank in the Thieves Guild. Cat Burglar, Thieves Guild (10) Reached Cat Burglar rank in the Thieves Guild. Prowler, Thieves Guild (10) Reached Prowler rank in the Thieves Guild. Bandit, Thieves Guild (10) Reached Bandit rank in the Thieves Guild. Footpad, Thieves Guild (10) Reached Footpad rank in the Thieves Guild. Pickpocket, Thieves Guild (10) Joined the Thieves Guild. Grand Champion, Arena (50) Completed the Arena Questline. Champion, Arena (10) Reached Champion rank in the Arena. Hero, Arena (10) Reached Hero rank in the Arena. Gladiator, Arena (10) Reached Gladiator rank in the Arena. Warrior, Arena (10) Reached Warrior rank in the Arena. Myrmidon, Arena (10) Reached Myrmidon rank in the Arena. Bloodletter, Arena (10) Reached Bloodletter rank in the Arena. Brawler, Arena (10) Reached Brawler rank in the Arena. Pit Dog, Arena (10) Joined the Arena in the Imperial City. Listener, Dark Brotherhood (50) Completed the Dark Brotherhood Questline. Speaker, Dark Brotherhood (10) Reached Speaker rank in the Dark Brotherhood. Silencer, Dark Brotherhood (10) Reached Silencer rank in the Dark Brotherhood. Assassin, Dark Brotherhood (10) Reached Assassin rank in the Dark Brotherhood. Eliminator, Dark Brotherhood (10) Reached Eliminator rank in the Dark Brotherhood. Slayer, Dark Brotherhood (10) Reached Slayer rank in the Dark Brotherhood. Murderer, Dark Brotherhood (10) Join the Dark Brotherhood. Champion of Cyrodiil (110) Completed the Main Questline. Destroyed the Great Gate (50) Destroyed the Great Gate, Main Quest. Delivered Daedric Artifact (50) Delivered Daedric Artifact, Main Quest. Located the Shrine of Dagon (50) Located the Shrine of Dagon, Main Quest. Closed an Oblivion Gate (50) Closed an Oblivion Gate, Main Quest. Escaped the Imperial Sewers (50) Escaped the Imperial Sewers, Main Quest Beginning. Master, Fighters Guild (50) Completed the Fighters Guild Questline. Apprentice, Fighters Guild (10) Reached Apprentice rank in the Fighters Guild. Champion, Fighters Guild (10) Reached Champion rank in the Fighters Guild. Guardian, Fighters Guild (10) Reached Guardian rank in the Fighters Guild. Warder, Fighters Guild (10) Reached Warder rank in the Fighters Guild. Defender, Fighters Guild (10) Reached Defender rank in the Fighters Guild. Protector, Fighters Guild (10) Reached Protector rank in the Fighters Guild. Swordsman, Fighters Guild (10) Reached Swordsman rank in the Fighters Guild. Journeyman, Fighters Guild (10) Reached Journeyman rank in the Fighters Guild. If you get Shivering Isles, there are more.