Here is the full list of all 26 Warhammer: Vermintide 2 achievements. It takes around 120-150 hours to unlock all of the achievements on Windows.
Complete Skittergate on Legend
Reach level 30 with Sienna
Reach Level 30 with all characters
Reach level 30 with Saltzpyre
Reach level 30 with Kerillian
Reach level 30 with Kruber
Equip a Veteran Item
Complete Skittergate on Champion
Reach level 30 with Bardin
Unlock all Talent points for 1 career
Craft 50 items
Complete a level as every Hero
Equip Exotic items in every slot
Salvage 100 items
Craft an Item
Equip an Exotic Item
Complete Skittergate on Recruit
Complete Skittergate on Veteran
Complete Act 2
Equip a Rare Item
Complete Act 3
Unlock 1st Talent point
Complete Act 1
Equip a Common Item
Salvage an item
Complete Prologue