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