Take down a Moloch.
Kill a Hammerhead.
Kill an Endworm.
Complete an artifact mission.
Defeat the Separatists in a submarine-vs-submarine mission.
Defeat the Coalition crew in a submarine-vs-submarine mission.
Heal someone back from a critical state.
Repair a broken device.
Successfully complete a traitor objective.
Take down a traitor before they manage to complete their objective.
Kill a clown.
Recover from an opiate addiction.
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.
Complete a round without any casualties or damage to the submarine.
Descend below 5000 meters.
Face a complete and utter disaster.
Discover the Cold Caverns.
Discover the Europan Ridge.
Discover the Hydrothermal Wastes.
Discover the Aphotic Plateau
Travel over 10 kilometers.
Travel over 100 kilometers
Kill 100 creatures.
Kill 100 humans.
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.
Complete a round as an Assistant.
Finish the campaign
Complete a wreck salvage mission
Discover the Great Sea.