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