Take the submarine down to crush depth and survive.
Complete a round as a Medical Doctor.
Repair a broken device.
Complete a round as an Assistant.
Heal someone back from a critical state.
Complete a round as an Electrical Engineer.
Travel over 100 kilometers.
Venture 500 meters away from the sub.
Defeat the Renegades in a submarine-vs-submarine mission.
Complete a cargo mission.
Kill 100 humans.
Recover from an opiate addiction.
Accelerate a submarine to over 100 km/h.
Complete a round as a Captain.
Kill something with nuclear explosives.
Cure a Husk Infection.
Complete a round as a Security Officer.
Successfully complete a traitor objective.
Take down a Moloch.
Complete a round along after everyone else in the crew has perished.
Spend 24 hours in the Submarine Editor in total.
Kill a clown.
Take down a traitor before they manage to complete their objective.
Travel over 10 kilometers.
Complete a round after a nuclear meltdown.
Kill something with morbusine.
Obtain a full clown costume.
Complete a round without any casualties or damage to the submarine.
Kill a Hammerhead.
Discover the Aphotic Plateau.
Kill an Endworm.
Discover the Cold Caverns.
Finish the campaign.
Discover the Europan Ridge.
Discover the Great Sea.
Discover the Hydrothermal Wastes.
Complete a round alone from start to finish.
Face a complete and utter disaster.
Complete a round as a Mechanic.
Complete a wreck salvage mission.
Defeat the Coalition crew in a submarine-vs-submarine mission.
Descend below 5000 meters.
Complete an artifact mission.
Kill 100 creatures.