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