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