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