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