Here is the full list of all 35 dUpLicity Beyond the Lies achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
You have unlocked all of the Achievements!
You have unlocked all of the Endings!
You have unlocked the Normal Bad End!
You have unlocked all of the CGs!
You have unlocked all of Other CGs!
You have unlocked all of Rei CGs!
You have unlocked the Harem Ending!
You have unlocked the Rei Bad Ending!
You have completed all of the Secret Book!
You have unlocked Rei Ending!
You have unlocked the secret book "Beyond the Lies"!
You have unlocked the status "Rei's Precious Treasure"!
You have unlocked all of Youji CGs!
You have unlocked the secret book "Eternal Lie 1"!
You have unlocked True End - Youji Side!
You have unlocked all of Kouichi CGs!
You have unlocked the secret book "Eternal Lie 2"!
You have unlocked True End - Kouichi Side!
You have unlocked the status "She Who Will Reveal the Truth"!
You have unlocked Youji Bad Ending 2!
You have unlocked Youji Bad Ending 1!
You have unlocked Youji Good Ending!
You have unlocked the secret book "Farewell with the Tale"!
You have unlocked Youji Love Ending!
You have unlocked the status "Youji's Brilliant Observer"!
You have unlocked Kouichi Bad Ending 2!
You have unlocked Kouichi Bad Ending 1!
You have unlocked Kouichi Good Ending!
You have unlocked the secret book "A New Tale"!
You have unlocked Kouichi Love Ending!
You have unlocked the status "Kouichi's Beloved Assistant"!
You have unlocked the Scientist Ending!
You have cleared the common route!
You have unlocked the status "Girl-Genius"!
You have cleared the Prologue!