Here is the full list of all 69 Barotrauma achievements.
Complete an artifact mission.
Kill a giant spineling
Complete a round without any casualties or damage to the submarine.
Complete a round as an Assistant.
Face a complete and utter disaster.
Recover from an opiate addiction.
Take down a Moloch.
Kill a Hammerhead.
Kill an Endworm.
Defeat the Separatists in a PvP submarine-vs-submarine mission.
Defeat the Coalition crew in a PvP submarine-vs-submarine mission.
Heal someone back from a critical state by performing CPR.
Repair a broken device.
Successfully complete a traitor objective.
Take down a traitor before they manage to complete their objective.
Kill a clown.
Take the submarine down to crush depth and survive.
Complete a round after a nuclear meltdown.
Cure a husk infection.
Kill something with morbusine.
Kill something with nuclear explosives.
Kill something with a plasma cutter, welding tool or a wrench.
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 Cold Caverns.
Discover the Europan Ridge.
Discover the Hydrothermal Wastes.
Discover the Aphotic Plateau
Discover the Great Sea.
Travel over 10 kilometers.
Travel over 100 kilometers
Kill 100 creatures.
Complete a cargo mission.
Spend 24 hours in the submarine editor in total.
Venture 500 meters away from the sub.
Complete a round as a Captain.
Complete a round as a Security Officer.
Complete a round as an Electrical Engineer.
Complete a round as a Mechanic.
Complete a round as a Medical Doctor.
Finish the campaign
Complete a wreck salvage mission
Complete an escort mission.
Kill a Charybdis
Kill a latcher
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.