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