Tier 1: Examine Marianne Chen’s Laptop
Tier 2: Search The Bog For CDC Team Members
As soon as you target one of the two enemies below, you will have found the CDC team members in the bog and the mission will update to killing them both. They wander the bog, you should spot one fairly quickly.
Tier 3: Kill Mavis Anderson & Killian Forsythe
Tier 4: Locate Ernesto Ramirez
Ernesto is further in the cave by where you killed Killian. There is a phone on the ground near his body, examine it.
Tier 5: Collect 3 Barrel Lids
Tier 6: Seal The Pipes
Tier 7: Kill Frank McGrath
When you seal the final pipe, Frank will come out and attack you. Dispatch him to finish the mission.
See our complete list of guides, solutions and walkthroughs by clicking here.