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