- Once again, you will need to fight through the COV: Devout Fanatics, Longshot Fanatic, Tink, Sapper Tink, Psycho Tink, Enforcer, Mauler,
- In the last wave, you will encounter a Badass Psycho, and a few more Fanatics.
- After that all, head over to the Northwestern wall and follow Brick to the door there.
- He will "unlock" the door and pry it open.
- Start heading through the doorway in front of you.