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