Full list of all 59 Sleeping Dogs achievements. It takes around 40-50 hours to unlock all of the achievements in the base game on Windows.
The base game contains 50 achievements, and there are 2 DLC packs containing 9 achievements.
Send Dogeyes, Ratface and Ponytail back to Hell.
Banish Smiley Cat.
Complete all secondary content.
Achieve 5 Gold Awards.
Find all the money shrines.
Complete the first mission.
Defeat the cultists.
Complete all Secondary Content.
Find all the Evidence Collectibles