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