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