Here is the full list of all 49 Subterrain achievements worth 1,000 gamerscore.
Kill 40 Brain Bug enemies.
Produce fruits or veggies 30 times at MPO's biosphere.
Kill 100 enemies of any type.
Collect ore 20 times using the extractor at MPO's mine.
Use toilets 10 times in one game.
Discover the ore extraction facilities of MPO's mine.
Produce fruits or veggies 20 times at MPO's biosphere.
Kill 50 enemies of any type.
Discover the agricultural facilities of MPO's biosphere.
Survive for more than 120 hours in a single game.
Discover the 3D printing facilities of Nilson Engineering.
Survive for more than 72 hours in a single game.
Kill 10 enemies of any type.
Produce 20 items using 3D printer or bio combiner in Nilson Engineering.
Discover Dr. West's old workplace: the Herbert Research Center.
Produce fruits or veggies 10 times at MPO's biosphere.
Collect ore 10 times using the extractor at MPO's mine.
Complete 5 research projects at Herbert Research.
Complete 10 research projects at Herbert Research.
Complete 15 research projects at Herbert Research.
Produce 5 items using 3D printer or bio combiner in Nilson Engineering.
Produce 10 items using the 3D printer or bio combiner at Nilson Engineering.
Survive for 24 hours in a single game.
Complete the tutorial section of the game at MPO Prison.
Destroy 20 cocoons before enemies pop out of them.
Kill 30 Big Fat enemies.
Kill 40 Spitter enemies.
Kill 15 Pre-Martian enemies.
Collect ore 30 times using the extractor at MPO's mine.
Discover the sprawling business of Mr. Bigelow: the Solar Casino.
Discover a residential district of MPO: Viking Square.
Discover the shopping district of MPO: Spirit Plaza.
Discover the business of the Burlington family: the Carson Hotel.
Discover the Leo residential district.
Discover the Gemini residential district.
Discover the Aries residential district.
Discover the Pisces residential district.
Explore every floor and every district of MPO.
Escape Mars by using the shuttle.
Discover the space port for MPO: the Murray Space Center.
Beat the game using the "Easy Mode" or higher difficulty setting.
Beat the game using the "Normal Mode" or higher difficulty setting.
Beat the game using the "Hardcore Mode" or higher difficulty setting.
Beat the game using the "Nightmare Mode" difficulty setting.
Beat the game with the "Permanent Death" option enabled.
Kill your old boss, Jeff Murray.
Kill Jennifer West, the Queen of Minerva.
Beat the game by siding with Jennifer.
Beat the game after refusing Jennifer's offer.