Full list of all 66 The Ascent achievements. It takes around 20-25 hours to unlock all of the achievements in the base game on Windows.
The base game contains 46 achievements, and there is 1 DLC pack containing 20 achievements.
Complete Find & Replace
Complete Critical Resource
Find and then lose something valuable
Complete all Cyber Heist Main Missions
Complete all Cyber Heist Missions
Destroy a Karlan controlled Siege Mech
Kill 50 level 35 or higher enemies
Obtain your first melee weapon
Kill a level 35 bounty
Completed Making Concessions
Complete Unshackled
Completed Love Kills
Completed all Cyber Heist Side Missions
Perform your first Hammer kill
Kill an enemy using melee's special move
Take down a member of Zells' guard
Take down Zell
Discover the Dark Playground
Take the train
Find a secret route