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