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