Here is the full list of all 27 Bacterium achievements.
Get 1 roast chicken at the delivery
Pass the training
Pass Dreamland
Feed jellyfish 5 times in Marine Circulatory System
Get more than 10 mods accumulatively in NCR Baccarat
Collect all audio data
Collect all the content in the virus wiki
Collect all skill fragments
Complete all stages with single player
Complete all mission lines about Hank.
Complete all mission lines about Rebecca
Pass Neville's treatment mission
Get Rank S in all tasks
NCR has been destroyed 200 times by harmful cells
Get 100'000 score in Humanity Devourer
Call over 50 autonomous NCRs using Nano Core communication devices
Consume 300 Nano Core Repair Kits
Eliminate 1000 harmfull cells
Accumulatively sold 120 NCR modules
Swallow 100 Cancer Cell Cores
Collect all 3 "Discount Weapons Mods"
Complete all mission lines about Anna
Pass the water quality inspection task within 90 secs
Only the brave who survived can come to the end
Challenge 100 layers
Collect all NCR suits
Collection of abyssal nanoscale core