This cheat will instantly complete the quest with the specified ID for your character.
completequest [quest id]
| Quest ID | The ID of the quest you wish to complete. |
CompleteQuest 0006b500
Executing the above command will complete the quest with ID 0006b500, which is The Glowing Sea.
CompleteQuest 000229ec
This cheat will instantly complete quest 000229ec, which is Institutionalized.