Here is the full list of all 21 CARRION achievements. It takes around 5-6 hours to unlock all of the achievements on Windows.
Breach the Leviathan Reef Base
Breach the Botanical Gardens
Relive the Second Flashback Sequence
Breach the Hazardous Waste Landfill
Gain access to 1 Containment Unit
Breach the Uranium Mines
Relive the First Flashback Sequence
Breach the Military Junkyard
Breach the BSL-4 Research Ward
Nourish yourself
Breach the Relith Science HQ
Breach the Bridge of the Leviathan Reef Base
Breach the Nuclear Power Plant
Breach the Armored Warfare Facility
Breach the Bunker
Carry on, my wayward son
Harvest your first ripe juicy head
Gain access to 3 Containment Units
Gain access to 6 Containment Units
Gain access to all 9 Containment Units
Relive the Final Flashback Sequence