 Columbine | Crafting / Alchemy | 5 |
 Column Caretaker | DLC Dungeons / Falkreath Hold | 5 |
 Commemorative Activity Achiever | Character / Anniversary | 10 |
 Commemorative Carnage | Character / Anniversary | 50 |
 Commemorative Cave Delver | Character / Anniversary | 50 |
 Commemorative Conqueror | Character / Anniversary | 50 |
 Commemorative Defender | Character / Anniversary | 50 |
 Commemorative Incursion Breaker | Character / Anniversary | 50 |
| Commemorative Master Angler | Character / Anniversary | 50 |
 Commemorative Mundus Missionary | Character / Anniversary | 10 |
 Commemorative Pathfinder | Character / Anniversary | 50 |
| Commemorative Safebox Looter | Character / Anniversary | 50 |
 Commemorative Skyshard Hunter | Character / Anniversary | 50 |
 Companion Champion | Infinite Archive / General | 15 |
 Companion Compatibility | Character / Companions | 50 |
 Companion of Lyris Titanborn | Greymoor / Prologue | 10 |
 Companion of Sai Sahan | Dragonhold / Prologue | 10 |
 Companionable Combatant | Infinite Archive / General | 10 |
 Compassionate Hero | Dungeons / Spindleclutch II | 50 |
 Complete All Hard Modes | Dungeons / General | 50 |
 Complete All Speed Challenges | Dungeons / General | 50 |
 Comrade's Steed | Character / Companions | 5 |
 Con the Covenant | Thieves Guild / Exploration | 15 |
 Concordia's Top Performer | Murkmire / Prologue | 10 |
| Confluence of Shadows | Night Market / Bosses | 5 |
 Conquer the Kvatch Arena | Dark Brotherhood / Exploration | 10 |
 Conquering Hero | Player VS Player / Battlegrounds | 15 |
| Consecrated Ground | Quests / Daggerfall Covenant | 15 |
 Conservatory Decorator | Housing / Decorating | 5 |
 Consort Killer | Morrowind / Exploration | 10 |
 Contagion Contained | DLC Dungeons / Earthen Root Enclave | 10 |
| Controlled Demolition | DLC Dungeons / Black Gem Foundry | 10 |
 Cooling Off | Firesong / Quests | 5 |
 Cooling Your Heels | DLC Dungeons / Bloodroot Forge | 10 |
 Coral Aerie Challenger | DLC Dungeons / Coral Aerie | 50 |
 Coral Aerie Conqueror | DLC Dungeons / Coral Aerie | 10 |
 Coral Aerie Vanquisher | DLC Dungeons / Coral Aerie | 10 |
 Coral Cliffs Explorer | High Isle / Exploration | 5 |
 Coral Compact | DLC Dungeons / Coral Aerie | 10 |
 Coral Haj Mota | High Isle / General | 15 |
 Core Coordination | Trials / Cloudrest | 15 |
 Corn Flower | Crafting / Alchemy | 5 |
| Coronation by Fire | Dungeons / Blessed Crucible | 50 |
| Corpse Garden Explorer | Exploration / Ebonheart Pact | 10 |
 Council of the Five Companions | Quests / Main Quest | 10 |
 Councilor | Housing / Property | 50 |
 Count | Housing / Property | 50 |
 Courage of a Naga | Murkmire / Quests | 10 |
 Court Collector | High Isle / Tales of Tribute | 10 |
 Court Ranger | Quests / Aldmeri Dominion | 5 |