- Open up the map or go to any Fast Travel station.
- Travel to Promethea and head to the Meridian Metroplex.
- Once there, you are going to want to head out of Watershed Base to the Northeast.
- As you approach, you will need to deal with a few Maliwan holdouts.
- Then approach and talk with Zer0 to clear the way forward.
- Once the shield is down, go ahead and move into the next zone: Neon Arterial.