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