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