Here is the full list of all 38 HELLDIVERS 2 achievements. It takes around 50-60 hours to unlock all of the achievements on Windows.
Complete a full Extreme difficulty Blitz mission and extract in under 6 minutes.
Have 6 orbital barrage stratagems in the same place at the same time.
Complete at least 100 missions.
Extract at least 15 rare samples from a mission as a team.
Upgrade all ship modules at least 1 level.
Reach max level on one ship module.
Play a planet defense mission.
Shoot off both arms on a Hulk and then extract while it's alive.
While using a jump pack, knock yourself into a ragdoll state.
Throw back a live grenade.
Provide assisted reload for a teammate.
Complete a full Hard difficulty mission or higher without anyone firing their primary or support weapon.
Complete an Extreme difficulty mission or higher without anyone dying.
Kill a Charger with a resupply pod.
Extract with at least 15 common samples.
Complete a Stalker Hive tactical objective.
Play at least 50 missions.
Kill 5,000 enemies.
Extract with a full team on a Hard difficulty or more mission.
Defeat a Hulk.
Defeat a Bile Titan
Complete 10 tactical objectives.
Fire at least 150 rounds in one burst, killing at least 10 enemies.
Kill 100 enemies using fire damage during the same mission.
Kill a target at a distance of over 100m.
Kill a bug warrior with a shotgun within 1 meter.
Extract after the timer reaches zero.
Kill 25 enemies with one stratagem.
Kill 150 enemies during the same mission.
Complete a mission but fail to extract.
Fly at least 25 meters from the shockwave of an explosion.
Be injured in all limbs at the same time.
Heal another player using stims.
Extract from a mission during nighttime.
Play 1 Bug Mission.
Play 1 Bot Mission.
Customize your Helldiver with new cape, armor, and helmet.
Complete Basic Training.