Here is the full list of all 25 Blacklist Brigade achievements.
Complete a mission
Complete a mission alone
Complete a mission without getting downed on Normal or harder difficulty
Complete a mission on Hard difficulty
Complete a mission on Very Hard difficulty
Reach level 70
Buy 5 weapons
Buy 10 weapons
Buy 15 weapons
Kill multiple enemies with a single frag grenade
Stun multiple enemies with a single flashbang
Successfully pick a lock with Lockpicking skill
Successfully hack an enemy turret with Jinx's Hacking ability
Open a safe with Dexter's C4 explosives
Melee strike on an unaware enemy
Revive a downed friendly with Scarlett's Blood Donor ability
Hit multiple enemies with a single sniper rifle bullet
Kill an enemy that is throwing a grenade before the grenade is thrown, causing it to explode in the enemy's dead face