Full list of all 23 Destiny 2 achievements. It takes around 200 hours to unlock all of the achievements in the base game on Windows.
The base game contains 13 achievements, and there is 1 DLC pack containing 10 achievements.
Complete the Leviathan raid on Prestige difficulty.
Complete the Leviathan raid.
Acquire each Titan subclass.
Acquire each Warlock subclass.
Complete 30 challenges.
Collect 15 Red War exotic weapons or armor.
Complete Introduction: Crucible.
Encounter an Agent of the Nine somewhere in the system.
Complete a Nightfall strike.
Complete a Flashpoint on Earth, Titan, Nessus, or Io.
Acquire each Hunter subclass.
Reach level 20.
Complete a Heroic public event.
Complete a Forsaken Exotic Quest.
Pursue Uldren and the Fanatic to the Watchtower, and finish what you started.
Collect 10 Forsaken Exotic weapons or armor.
Earn 5,000 Triumph points.
Complete the "Last Wish" Raid.
Win a Gambit match.
Defeat a Forsaken Nightfall Boss.
Enter the Dreaming City.
Complete a Triumph Seal.
Complete a Collections Badge.