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