The Elder Scrolls IV: Oblivion - Game of the Year Edition Cheats

Citizen, Shivering Isles (20): Reached Citizen Rank in the Court of Madness.
Closed an Oblivion Gate (50): Closed an Oblivion Gate, Main Quest.
Conjurer, Mages Guild (10): Reached Conjurer rank in the Mages Guild.
Defender, Fighters Guild (10): Reached Defender rank in the Fighters Guild.
Defender, Shivering Isles (20): Reached Defender of the Realm Rank in the Court of Madness.
Delivered Daedric Artifact (50): Delivered Daedric Artifact, Main Quest.
Destroyed the Great Gate (50): Destroyed the Great Gate, Main Quest.
Duke Dementia, Shivering Isles (30): Reached Duke of Dementia Rank in the Court of Madness.
Duke Mania, Shivering Isles (30): Reached Duke of Mania Rank in the Court of Madness.
Eliminator, Dark Brotherhood (10): Reached Eliminator rank in the Dark Brotherhood.
Escaped the Imperial Sewers (50): Escaped the Imperial Sewers, Main Quest Beginning.
Evoker, Mages Guild (10): Reached Evoker rank in the Mages Guild.
Footpad, Thieves Guild (10): Reached Footpad rank in the Thieves Guild.
Gladiator, Arena (10): Reached Gladiator rank in the Arena.
Grand Champion, Arena (50): Completed the Arena Questline.
Guardian, Fighters Guild (10): Reached Guardian rank in the Fighters Guild.
Guildmaster, Thieves Guild (50): Completed the Thieves Guild Questline.
Hero, Arena (10): Reached Hero rank in the Arena.
Honored Madman, Shivering Isles (20): Reached Honored Madman Rank in the Court of Madness.
Journeyman, Fighters Guild (10): Reached Journeyman rank in the Fighters Guild.
Journeyman, Mages Guild (10): Reached Journeyman rank in the Mages Guild.
Listener, Dark Brotherhood (50): Completed the Dark Brotherhood Questline.
Located the Shrine of Dagon (50): Located the Shrine of Dagon, Main Quest.
Madgod, Shivering Isles (50): Stopped the Greymarch.
Madman, Shivering Isles (20): Reached Madman Rank in the Court of Madness.
Magician, Mages Guild (10): Reached Magician rank in the Mages Guild.
Master Thief, Thieves Guild (10): Reached Master Thief rank in the Thieves Guild.
Master, Fighters Guild (50): Completed the Fighters Guild Questline.
Master-Wizard, Mages Guild (10): Reached Master Wizard rank in the Mages Guild.
Murderer, Dark Brotherhood (10): Join the Dark Brotherhood.
Myrmidon, Arena (10): Reached Myrmidon rank in the Arena.
Pickpocket, Thieves Guild (10): Joined the Thieves Guild.
Pit Dog, Arena (10): Joined the Arena in the Imperial City.
Protector, Fighters Guild (10): Reached Protector rank in the Fighters Guild.
Prowler, Thieves Guild (10): Reached Prowler rank in the Thieves Guild.
Regent, Shivering Isles (20): Reached Regent Rank in the Court of Madness.
Shadowfoot, Thieves Guild (10): Reached Shadowfoot rank in the Thieves Guild.
Silencer, Dark Brotherhood (10): Reached Silencer rank in the Dark Brotherhood.
Slayer, Dark Brotherhood (10): Reached Slayer rank in the Dark Brotherhood.
Speaker, Dark Brotherhood (10): Reached Speaker rank in the Dark Brotherhood.
Swordsman, Fighters Guild (10): Reached Swordsman rank in the Fighters Guild.
Tourist, Shivering Isles (20): Entered the Shivering Isles.
Warder, Fighters Guild (10): Reached Warder rank in the Fighters Guild.
Warlock, Mages Guild (10): Reached Warlock rank in the Mages Guild.
Warrior, Arena (10): Reached Warrior rank in the Arena.
Wizard, Mages Guild (10): Reached Wizard rank in the Mages Guild.