Completing this quest results in Shadow Vault becoming a friendly (or neutral) quest hub.
The general keeps himself within the vault overseeing the creation of new weapons. Disturb one of his weapon racks at the northern forge and I assure you, he will come. I'll send Vile, Lady Nightswood, and The Leaper in to help you.
If we are to finally own The Shadow Vault, General Lightsbane must fall!
General Lightsbane and his forces are defeated? The Shadow Vault is taken?