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