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