The Hangar 6 R&D Add-on for The Bureau: XCOM Declassified has 7 achievements.
Defeat the Hangar 6 R&D Invaders
Beat Hangar 6 R&D without firing any alien weapons
Complete DaSilva's perk tree without choosing Lift, Drone, or Mind Control
Trigger the Invasion in Hangar 6
Take a level 5 agent of every class into the field within a single Hangar 6 R&D campaign
Destroy 60 enemies with DaSilva's Demo Charges within a single Hangar 6 R&D campaign
Complete the first trial in Hangar 01