Full list of all 93 Back 4 Blood achievements. It takes around 120-150 hours to unlock all of the achievements in the base game on Windows.
The base game contains 55 achievements, and there are 3 DLC packs containing 38 achievements.
Kill 53,600 Ridden over your career.
Win a game in Swarm Mode.
Complete Act 4 on Veteran difficulty or higher.
Complete Act 4 on Nightmare difficulty.
Complete all Act 3 maps on Veteran difficulty or higher.
Complete all Act 3 maps on Nightmare difficulty.
Complete Blue Dog Hollow.
Complete all Act 1 maps on Recruit difficulty or higher.
Complete all Act 1 maps on Veteran difficulty or higher.
Complete all Act 1 maps on Nightmare difficulty.
Kill an Ogre with the Howitzer.
Complete all Act 2 maps on Veteran difficulty or higher.
Complete all Act 2 maps on Nightmare difficulty.
Make a Breaker hurt itself.
Kill a Monstrous Breaker after removing all of its armor.
Complete a map without any players on the team killing a single Ridden.
Complete Act 4 on Recruit difficulty or higher.
Complete a mission with each of the original Cleaners.
Find the secret in The Abomination.
Complete Remnants.
Complete all Act 3 maps on Recruit difficulty or higher.
Complete all Act 2 maps on Recruit difficulty or higher.
Kill 10 Ridden with Bob's Arm.
Find the secret in Plan B.
Find the secret in The Armory.
Find the secret in Blue Dog Hollow.
Find the secret in The Devil's Return.
Safely descend the ladder in the construction zone in Resurgence.
Kill a Snitch without it alerting the horde.
Find the secret in Remnants.
Complete Dr. Rogers' Neighborhood.
Find the secret in Dr. Rogers' Neighborhood.
Complete Job 10:22.
Find the secret in Job 10:22.
Complete Plan B.
Drop some ammo for a teammate.
Play 25 cards in a single match.
Complete Search & Rescue.
Complete The Dark Before The Dawn.
Rescue a teammate from a cocoon.
Kill at least one of each non-boss Mutation.
Find the secret in The Dark Before the Dawn.
Defend the jukebox in Bar Room Blitz without it breaking.
Find the secret in Search & Rescue.
Complete a level while getting at least 50 kills with melee weapons.
Complete The Armory.
Kill 15 enemies while downed.
Spend your first Supply Point.
Complete The Devil's Return.
Revive a fallen teammate.
Complete a map without ever triggering a horde from Reekers, Birds, Snitches, or alarms.
Complete a mission without any players being incapacitated or killed.
Heal a teammate.
Good luck out there, you're gunna need it.
Form a party in Fort Hope.
Find the Secret in The Nursery.
Earn some Skull Totems.
Kill 10 Ridden with a Skull Totem.
Complete All Ridden Hives.
Get a kill with a Legendary Weapon.
Kill each of the Warped Ridden
Find the Secret in Sunken Passages.
Find the Secret in The Cut.
Find the Secret in Brood Lair.
Find the Secret in 300 Below.
Find the Secret in Blood Stream.
Find the Secret in Caustic Cesspool.
Complete all Act 6 maps on Recruit difficulty or higher.
Complete all Act 6 maps on Veteran difficulty or higher.
Complete all Act 6 maps on Nightmare difficulty or higher.
Complete all Act 6 maps on No Hope difficulty.
Find the Secret in Act 6.
Land a final blow on a Boss Mutation with the LAW.
Set an enemy on fire with the Flamethrower, while also being on fire.
Play Trial of the Worm for the first time.
Earn a score of at least 100,000 in Trial of the Worm.
Complete a map in Trial of the Worm with a total modifier of at least x20.
Kill all variants of the Sentinel.
Defeat The Harbinger without using the LAW.
Blow up a Food Item with the LAW.