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.
Shoot off both arms on a Hulk and then extract while it's alive.
Complete at least 100 missions.
Kill 100 enemies using fire damage during the same mission.
Reach max level on one ship module.
Extract with at least 15 common samples.
Upgrade all ship modules at least 1 level.
Play at least 50 missions.
Defeat a Hulk.
Extract at least 15 rare samples from a mission as a team.
Kill 5,000 enemies.
Kill a bug warrior with a shotgun within 1 meter.
Extract with a full team on a Hard difficulty or more mission.
Fire at least 150 rounds in one burst, killing at least 10 enemies.
Complete 10 tactical objectives.
Complete a Stalker Hive tactical objective.
Kill 25 enemies with one stratagem.
Play 1 Bug Mission.
Kill 150 enemies during the same mission.
Defeat a Bile Titan
Complete a mission but fail to extract.
Fly at least 25 meters from the shockwave of an explosion.
Kill a target at a distance of over 100m.
Extract from a mission during nighttime.
Heal another player using stims.
Throw back a live grenade.
Extract after the timer reaches zero.
Play a planet defense mission.
Play 1 Bot Mission.
Customize your Helldiver with new cape, armor, and helmet.
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.
Be injured in all limbs at the same time.
While using a jump pack, knock yourself into a ragdoll state.
Provide assisted reload for a teammate.