Here is the full list of all 39 HELLDIVERS achievements.
Complete at least one planet in a successful Galactic Campaign.
Take part in a successful final assault on an enemy's home planet by completing at least one mission.
Take part in a successful defense of a capital city by completing at least one mission.
Complete a difficulty 7 or higher mission against the Cyborgs without taking damage from any enemy.
Kill an Illuminate Obelisk while it is closed.
Defeat an Illuminate Great Eye.
Complete a mission with over 300 shots fired and 80% accuracy or better.
Kill a Bug Tank with a Resupply Stratagem Hellpod.
Complete a difficulty 4 or higher mission in 5 minutes or less.
Kill a Bug or Illuminate assassination target by running it over with the APC or HAV.
In a 4 player game, on a Friday, have all players sitting in an APC or HAV at the same time.
Defeat a Bug Hive Lord.
Kill 10,000 enemies.
Complete a mission using only Stratagems.
Defeat a Cyborg Siegemech.
While in melee range from a Cyborg Warlord, use the "NO" communication command.
Destroy a Bug Nest, Cyborg AA, or Illuminate Beacon with anything but the NUX-223 Hellbomb.
Successfully complete an escort objective where all 4 NPCs survive.
Complete a difficulty 7 or higher mission without triggering any alarms.
Complete a difficulty 10 or higher mission without a single death.
Complete all missions on a planet with difficulty 10 or higher.
Kill a Bug Tank, Bug Behemoth, or Cyborg IFV by having the extraction shuttle land on it.
Complete a volcanic type planet of difficulty 5 or more.
Face each new enemy once.
Use the Reinforce Stratagem while downed and the last Helldiver alive on a difficulty 8 or higher mission with 4 players.
Achieve the rank of Captain (Rank 13).
Play at least once against all enemy races.
Extract from a difficulty 8 or higher mission with 4 players where all 4 get on the shuttle.
Achieve the rank of Sergeant (Rank 7).
Play at least once on a desert, a forest, and a snow planet.
Do 25 capespins in a row, without moving, while on the ship bridge.
Customize your character.
Complete a mission.
Kill 7 enemies within a very short time using only your primary weapon.
Join another game through the matchmaking system.
Finish the Training.
Kill 100,000 enemies.
Achieve the rank of Grand Lord (Rank 25).
Fully upgrade all non DLC Weapons and Stratagems.