The Bureau: XCOM Declassified
41 Achievements
25-30h
Conscientious Objector
Beat Hangar 6 R&D without firing any alien weapons
1.3%
How to unlock the Conscientious Objector achievement in The Bureau: XCOM Declassified - Definitive Guide
I recommend rookie difficulty as towards the end of the dlc human weapons are underpowered.
Your squad agents can use alien weaponry without affecting this achievement.
Alien weaponry consists of anything with Laser or Plasma in the name, as well as Sticky Grenades.
Lightning weapons and the Microwave Gun are human technology and thus are safe to use while trying for this achievement.
Missable!
You will start receiving alien weapons halfway through the DLC. It is best to play on Rookie difficulty to make this trophy much easier. The following weapons are ok to use and will not void this trophy:
M1911 Pistol
M14 Rifle
M1897 Shotgun
M1903-A4 Sniper Rifle
Z-62 Machine Pistol
Microwave Gun
Lightning Cannon
AK47
Frag Grenade
*The Light Plasma Pistol DLC weapon is not available for use while playing Hangar 6 R&D campaign.
Do not use or fire any alien weapons to include Plasma, Laser, Scatter and Sticky Grenades to receive this trophy after completion of the DLC. If you do happen to pick up and use an alien weapon during combat, reload a previous save prior to that incident.
Credit to nimrod for the confirmation that your squad can use alien weapons, just not Agent DaSilva. If you happen to pick up a weapon by accident, drop it without firing and you will still obtain this trophy.