Here is the full list of all 33 Zero Escape: Zero Time Dilemma achievements. It takes around 15-20 hours to unlock all of the achievements on Windows.
Collect all trophies.
Clear all C-Team fragments.
Clear all Q-Team fragments.
Clear all D-Team fragments.
Clear all fragments.
Finish CQD-END: 2.
Gain all Cinema Files.
Successfully activate the Force Quit Box.
Shoot that person.
Finish Q-END: 2.
Successfully remove the helmet.
Finish C-END: 1.
Answer with the correct date.
Finish D-END: 2.
Live a happy virtual life.
Protect Akane and obtain the X-Passes.
Complete all quests.
Finish D-END: 1.
Obtain all Quest Files.
Drink the real antidote.
All the dice roll 1s.
Correctly answer the Monty Hall Problem.
Complete 6 quests.
No one presses the button, everyone lives.
Watch all the cinematics in a fragment.
Resist temptation to press the button.
Finish Q-END: 1.
Go through your first bad ending.
Shoot a blank, everyone lives.
Complete 1 quest.
Obtain 1 Quest File.
Gain 1 Cinema File.
Finish CQD-END: 1.