Tom Clancy's Splinter Cell: Double Agent
38 Achievements
1,000
Xbox 360
Xbox One
Xbox Series
HQ 3 Assignment Completed
In solo mode, completed the third terrorist HQ assignment Details for this achievement will be revealed once unlocked
30
How to unlock the HQ 3 Assignment Completed achievement in Tom Clancy's Splinter Cell: Double Agent - Definitive Guide
Complete the eighth mission. Also known as the 3rd JBA mission, be prepared to sneak around and do whatever it takes to collect all of the terrorist info that you can.