Here is the full list of all 12 ChronoCodex achievements.
Clear Relapse on default difficulty
Clear Relapse on void difficulty
Clear Ascend on default difficulty
Clear Ascend on void difficulty
Clear Spiral on default difficulty
Clear Spiral on void difficulty
Clear Bonds on default difficulty
Clear Bonds on void difficulty
Clear Isolate on default difficulty
Clear Isolate on void difficulty
Clear Dazed on default difficulty
Clear Dazed on void difficulty