Here is the full list of all 69 Barotrauma achievements.
Complete a wreck salvage mission
Complete an artifact mission.
Take the submarine down to crush depth and survive.
Cure a husk infection.
Kill something with a plasma cutter, welding tool or a wrench.
Take down a Moloch.
Kill 100 creatures.
Discover the Europan Ridge.
Complete a round as a Security Officer.
Travel over 10 kilometers.
Complete a cargo mission.
Face a complete and utter disaster.
Venture 500 meters away from the sub.
Complete a round without any casualties or damage to the submarine.
Complete a round as an Electrical Engineer.
Discover the Cold Caverns.
Kill a Hammerhead.
Recover from an opiate addiction.
Heal someone back from a critical state by performing CPR.
Repair a broken device.
Kill an Endworm.
Defeat the Separatists in a PvP submarine-vs-submarine mission.
Defeat the Coalition crew in a PvP submarine-vs-submarine mission.
Successfully complete a traitor objective.
Take down a traitor before they manage to complete their objective.
Kill a clown.
Complete a round after a nuclear meltdown.
Kill something with morbusine.
Kill something with nuclear explosives.
Obtain a full clown costume.
Complete a round alone after everyone else in the crew has perished.
Complete a round alone from start to finish.
Accelerate a submarine to over 100 km/h.
Descend below 5000 meters.
Discover the Hydrothermal Wastes.
Discover the Aphotic Plateau
Discover the Great Sea.
Travel over 100 kilometers
Spend 24 hours in the submarine editor in total.
Complete a round as a Captain.
Complete a round as a Mechanic.
Complete a round as a Medical Doctor.
Complete a round as an Assistant.
Finish the campaign
Complete an escort mission.
Kill a Charybdis
Kill a latcher
Kill a giant spineling
Kill a crawler Broodmother.
Become a perfect example of symbiotic harmony.
Learn to laugh at the Grand Joke of the Universe.
Reinforce your crew with an eminent Coalition leader.
Employ the skills of a celebrity chef to your crew.
Bolster your crew by hiring a steadfast Separatist leader.
Enlist the services of an elusive explosives-expert.
Allow an enigmatic religious leader to assist your crew.
Accept the offer of a senior humorist to join your crew.
Complete a "scan alien ruin" -mission.
Complete a "clear alien ruin" -mission.
Restore a run-down beacon station.
Complete a "rescue hostages" -mission.
Complete an "assassinate bandit leader" -mission.
Complete a "destroy bandit outpost" -mission.
Complete a "destroy monster-infested outpost" -mission.
Complete a "destroy monster nest" -mission.
Complete a mining mission.
Defeat a Coalition submarine in the campaign mode.
Defeat a Separatist submarine in the campaign mode.