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.
Shoot off both arms on a Hulk and then extract while it's alive.
Have 6 orbital barrage stratagems in the same place at the same time.
Kill a Charger with a resupply pod.
Be injured in all limbs at the same time.
Kill 100 enemies using fire damage during the same mission.
Reach max level on one ship module.
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.
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.
Extract with a full team on a Hard difficulty or more mission.
Play at least 50 missions.
Defeat a Hulk.
Kill 5,000 enemies.
While using a jump pack, knock yourself into a ragdoll state.
Throw back a live grenade.
Kill 25 enemies with one stratagem.
Complete 10 tactical objectives.
Defeat a Bile Titan
Fire at least 150 rounds in one burst, killing at least 10 enemies.
Complete a Stalker Hive tactical objective.
Kill a target at a distance of over 100m.
Heal another player using stims.
Extract with at least 15 common samples.
Fly at least 25 meters from the shockwave of an explosion.
Provide assisted reload for a teammate.
Kill a bug warrior with a shotgun within 1 meter.
Extract from a mission during nighttime.
Play 1 Bug Mission.
Extract after the timer reaches zero.
Customize your Helldiver with new cape, armor, and helmet.
Play 1 Bot Mission.
Play a planet defense mission.
Complete a mission but fail to extract.
Kill 150 enemies during the same mission.
Complete Basic Training.