Here is the full list of all 33 Transistor achievements. It takes around 15-20 hours to unlock all of the achievements on Windows.
Clear one of each Test.
Complete each Speed Test.
Unlock 32 MEM.
Achieve User Level 16.
Unlock every Process Limiter.
Complete each Planning Test.
Inspect 10 completed Function Files.
Complete the story.
Confront Royce beyond Cloudbank.
Complete each Stability Test.
Unlock every Transistor Function.
Confront Grant and Asher at Bracket Towers.
Deal at least 2048 damage in one Turn() in the Practice Test.
Deal at least 1024 damage in one Turn() in the Practice Test.
Inspect five completed Function Files.
Confront the Spine at the Bracket Towers facade.
Achieve User Level 8.
Use 10 different OVC Terminals.
Confront Sybil at the Empty Set.
Reach the Goldwalk District.
Complete each Performance Test.
Complete each Agency Test
Clear every Test.
Recurse through the story.
Complete five encounters with one or more Limiters in use.
Complete five encounters with five or more Limiters in use.
Complete five encounters with all 10 Limiters in use.
Inspect all completed Function Files.
Inspect all completed Limiter Files.
Unlock every Upgrade Slot and Passive Slot.
Upgrade a Function with a copy of itself.
Achieve User Level 24.
Create a Function combination requiring 12 MEM.