Here is the full list of all 36 Warhammer 40,000: Darktide achievements.
Have 4 different Classes at rank 30.
As the Psykinetic, kill 3 elites with a single Perils of the Warp on Malice difficulty or higher.
As the Skullbreaker, knock down 100 enemies with a single Bull Rush on Malice difficulty or higher.
Complete at least one of each Mission type on Heresy difficulty or higher.
As the Psykinetic, kill a pouncing Pox Hound with Brain Burst.
As the Preacher, hit an enemy sniper more than 40 metres away using a Stumm Grenade.
Help 100 downed Operatives back up.
Complete 10 missions in a row without going down on Malice difficulty or higher.
Kill a total of 40.000 enemies.
Complete 100 missions without anyone being downed.
Have 2 different Classes at rank 30.
Kill 20 consecutive enemies with headshots.
As the Sharpshooter, kill 5 enemies with a Frag Grenade without it bouncing.
As the Sharpshooter, complete a Mission on Malice Threat or higher without taking any melee damage.
As the Preacher, kill 50 shocked enemies within 10 seconds on Malice difficulty or higher.
As the Preacher, kill a charging Mutant with a melee attack while Dashing.
Complete Path of Trust chapter 6.
As the Sharpshooter hit 4 weakspots without missing a shot during one use of Volley Fire.
Complete Path of Trust chapter 5.
Banish a Daemonhost
Kill a Monstrosity in 20 seconds or less.
Complete Path of Trust chapter 4.
Complete at least one of each Mission type on Uprising difficulty or higher.
Kill 90 enemies in less than 30 seconds.
Complete Path of Trust chapter 3.
Block 600 damage in 10 seconds.
Complete Path of Trust chapter 2.
Unlock access to Sire Melk's Requisitiorium.
Unlock your first Curio slot.
Complete a Data Interrogation without an incorrect Auspex entry.
As the Skullbreaker, use Bull Rush to interrupt a Plague Ogryn's charge.
As the Skullbreaker, kill a Corruptor by hitting it in the eye with your grenade.
Dodge 12 attacks in a row.
Complete Path of Trust chapter 1.
Complete the prologue.
As the Psykinetic, kill 20 enemies within 2 seconds by knocking them off a ledge using your Ability.