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