It can be obtained during the Daedric quest "A Daedra's Best Friend" and may be granted as a reward from Clavicus Vile in exchange for killing Barbas (Barbas must be killed with the axe, no other weapon will work).
- "'Tis a wicked axe you wield there, friend. That blade looks sharp enough to cut through a god." —Hold Guards, if the axe is equipped.
- "One of Clavicus's little jests. A wizard named Sebastian Lort had a daughter who worshiped Hircine. When the daughter became a werewolf it drove Sebastian over the edge. He couldn't stand to see his little girl take on such a bestial form. The wizard wished for the ability to end his daughter's curse. Clavicus gave him an axe." —Barbas, when asked about the axe.
- The Rueful Axe does not count towards the achievements/trophies Daedric Influence and Oblivion Walker.
- The Rueful Axe swings much slower than any other weapon.
- The axe has two howling wolf motifs on the sides, a nod towards what became of Sebastian's daughter.
- Albeit enchanted, it seems to do less base damage than the unique battleaxe Wuuthrad, while still being slower to swing.
This section contains bugs related to Rueful Axe. Before adding a bug to this list, consider the following:
- For a way to obtain both the Masque of Clavicus Vile and the Rueful Axe, see the "bugs" section on the "A Daedra's Best Friend" page.
- If placed on a weapon rack in Hjerim, it will descend into the floor until it disappears. This bug is also associated with Volendrung. This also occurs at Lakeview Manor, it will sink progressively over time and will "reset" if taken off and placed back again.
- The Rueful Axe will sound like a sword when unsheathing and sheathing.
- Occasionally, if placed on a weapon rack and you have your follower pick it up from the rack, it will count the weapon as stolen causing Lydia or other housecarls to attack you. The Rueful Axe will now always be labeled as stolen. If you sell it to a fence to remove the stolen label, it will just come back as stolen.[unconfirmed]