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