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