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