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