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