Full list of all 27 Sig.NULL achievements worth 4,000 gamerscore. It takes around 0-0.5 hours to unlock all of the achievements in the base game on Xbox One.
The base game contains 10 achievements worth 1,000 Gamerscore, and there are 3 DLC packs containing 17 achievements worth 3,000 Gamerscore.
Complete third level at I/O STREAM less than 20 steps
Complete remote drone level at MANUAL PAGES
Watch replay of any level to the end
Rail the line on levels map
Complete RULES puzzle at main menu
Complete first level at I/O STREAM less than 30 steps
Complete first level at I/O STREAM
Complete first level at MANUAL PAGES
Restart any level
Undo at least one step
Infect drones first time to win
Use time-stable ability of VIOLET drone to solve the puzzle
Free RED drone and compelte it's task
Make your first explosion to solve the level
Complete first level at LOCKED DATA
Complete all levels at I/O STREAM location
Complete LOOPS DEBUGGER
Complete INFECTED CLUSTER
Complete MEMORY SWAPPING
Complete LOCKED DATA
Complete UNSTABLE SECTOR
Complete all levels at MANUAL PAGES
Complete the game
Complete OLD SIGNALS location
Complete NULL REFERENCE location
Complete at least one level at EXCEPTIONS STORAGE location
Complete CLOJURES location