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