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.
Shoot off both arms on a Hulk and then extract while it's alive.
Reach max level on one ship module.
While using a jump pack, knock yourself into a ragdoll state.
Extract with at least 15 common samples.
Extract at least 15 rare samples from a mission as a team.
Provide assisted reload for a teammate.
Play at least 50 missions.
Kill 25 enemies with one stratagem.
Defeat a Bile Titan
Kill 5,000 enemies.
Extract with a full team on a Hard difficulty or more mission.
Kill a bug warrior with a shotgun within 1 meter.
Throw back a live grenade.
Extract after the timer reaches zero.
Play a planet defense mission.
Kill a target at a distance of over 100m.
Complete 10 tactical objectives.
Defeat a Hulk.
Heal another player using stims.
Kill 150 enemies during the same mission.
Complete a Stalker Hive tactical objective.
Play 1 Bot Mission.
Customize your Helldiver with new cape, armor, and helmet.
Complete a mission but fail to extract.
Fly at least 25 meters from the shockwave of an explosion.
Play 1 Bug Mission.
Extract from a mission during nighttime.
Complete Basic Training.
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.
Complete a full Extreme difficulty Blitz mission and extract in under 6 minutes.
Kill a Charger with a resupply pod.
Complete at least 100 missions.
Have 6 orbital barrage stratagems in the same place at the same time.
Kill 100 enemies using fire damage during the same mission.
Fire at least 150 rounds in one burst, killing at least 10 enemies.
Be injured in all limbs at the same time.
Upgrade all ship modules at least 1 level.