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