EVA Gear: "Your EVA Gear allows you to breathe the low oxygen atmosphere on Mars". Not really true. Suggest "...allows you to breath in the thin, oxygen-less atmosphere of Mars"
Life Support: "When the Separator water holding tank gets above 1 gallon" Suggest using either metric or english units throughout game and Help -- or perhaps in some cases using numbers without units -- as you sometimes do.
Scrubber: " Mars is about 4% inert gas..." Just for completeness, might want to add "(mostly nitrogen and argon)". In game's Scrubber panels, you just say "nitrogen" . Might want to add argon here too.
Start Mushrooms: Don't think the game allows mushrooms to be used as fish food.
Extra Information (below Mushroom Bed): Bio Processor does not process Worms and Mushrooms for food. They are used in kitchen directly to prepare food.
Geology: Everything you wrote is accurate, but it seems complicated, and there are apparently shortcuts. Perhaps good to let players find these for themselves (?). For instance, the Soil Analyzer (in the white case) would seem to replace the portable LIBS tester for taking AND field testing surface soil samples. Likewise the Soil Analyzer seems an adequate assayer of core samples to decide where/when to set Auger (unless, perhaps you need the more detailed Lab LIBS data if you want to get credit for the ore discovery itself).
Might want to make mention of the Low Density / High Density info given when core samples taken.
will review more sections later