Jonex137,545 Locked 24 Aug 2016 24 Aug 2016
During your second visit to UNATCO HQ, you'll have to wait outside Manderley's office, while he has a conversation with Walton Simons. When Simons leaves, follow him down to the detention area and quickly enter the interrogation room when he opens the door to get in. Either kill or knock out the two NSF prisoners in there to receive this achievement.
Tip: If you wait too long, Simons will kill them instead.