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