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