Here is the full list of all 17 Contradiction - Spot The Liar! achievements. It takes around 5-6 hours to unlock all of the achievements on Windows.
You completed 6pm!
You didn't use any cheats during 6pm - well done!
You completed 5pm!
You didn't use any cheats during 5pm - congratulations!
You completed 7pm!
You didn't use any cheats during 7pm - excellent work!
You completed 8pm!
You didn't use any cheats during 8pm - amazing!
You completed 9pm!
You didn't use any cheats during 9pm - brilliant!
You completed 10pm!
You didn't use any cheats during 10pm - fantastic!
You completed 11pm!
You didn't use any cheats during 11pm - incredible!
Well done - you've completed the game!
You didn't use any cheats in the final chapter - well done!!
Amazing... Incredible... How can this be?!! You completed the whole game with no cheats!!!