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