Here is the full list of all 24 Strata achievements. It takes around 8-10 hours to unlock all of the achievements on Windows.
Complete 50 Perfect Puzzles
Perfect the entire Prodigy Set
Complete the Prodigy Set
Perfect the entire Sundry Set
Complete the Sundry Set
Complete the Persist Set
Perfect the entire Persist Set
Complete a 4x4 puzzle
Perfect a 4x4 puzzle
Complete the Flourish Set
Perfect the entire Flourish Set
Perfect the entire Entwine Set
Complete the Entwine Set
Complete 10 Perfect Puzzles
Perfect a 3x3 puzzle
Complete a 3x3 puzzle
Complete your first Perfect Puzzles
Complete the Tutorial
Complete 100 Perfect Puzzles
Complete 200 Perfect Puzzles
Complete a 5x5 puzzle
Perfect a 5x5 puzzle
Complete a 6x6 puzzle
Perfect a 6x6 puzzle