Here is the full list of all 59 Sleeping Dogs: Definitive Edition achievements worth 1,225 gamerscore.
Defeated the cultists.
Found all the Evidence Collectibles
Completed all secondary content of Year of the Snake.
Completed End of the World.
Achieved 5 Gold Awards.
Found all the money shrines.
Banished Smiley Cat.
Completed all secondary content of Nightmare in North Point.
Sent Dogeyes, Ratface and Ponytail back to Hell.
Unlocked ten Triad Upgrades.
Completed 100% of all missions, cases, favors, events, jobs and races.
Completed all of the open world Events.
Completed Big Smile Lee.
Used 10 different firearms to defeat enemies.
Purchased all clothing.
Purchased all vehicles.
Achieved 30 Gold Stat Awards.
Prayed at all of the Health Shrines.
Unlocked every lockbox in Central.
Completed all Favors.
Achieved 30 Silver Stat Awards.
Hacked every Security Camera in the game.
Unlocked every lockbox in Kennedy Town and Aberdeen.
Completed all cases.
Completed all Street Races.
Unlocked every lockbox in North Point.
Shot out a cop's tires while fleeing in a police chase.
Achieved 90% and above for all songs at the Karaoke Bars in HK.
Completed Dockyard Heist.
Killed someone with a fish.
Unlocked ten Cop Upgrades.
Achieved 15 Gold Stat Awards.
Picked a lock, planted a bug, traced a phone, cracked a safe, and took over a spy camera.
Achieved Face Level 10.
Cruised for 2 minutes over 60 Km/h without damaging your car.
Completed all of Roland's Jobs.
Completed 50% of all missions, cases, favors, events, jobs and races.
Hijacked 5 trucks and collected their cargo.
Won 50,000 on a single cockfight.
Defeated all 4 Martial Arts Clubs
Achieved 15 Silver Stat Awards.
Won a bet on a cockfight.
Completed half of the open world events.
Tried 10 different foods or drinks.
Completed 25% of all missions, cases, favors, events, jobs and races.
Achieved Face Level 5.
Completed Payback.
Successfully performed an action hijack.
Achieved 5 Gold Stat Awards.
Used 10 different melee weapons to defeat enemies.
Achieved 5 Silver Stat Awards.
Visited Aberdeen, Central, Kennedy Town and North Point.
Changed all your clothes in your wardrobe or a clothing store.
Completed 10% of all missions, cases, favors, events, jobs and races.
Completed a Case.
Achieved 1 Gold Stat Award.
Achieved Face Level 2.
Completed Night Market Chase.
Performed 5 unique environmental kills.