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