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