Here is the full list of all 29 ArcRunner achievements.
Fully upgrade an Augment
Unlock a weapon in the Armoury
Defeat 10 elites
Complete 10 Challenges
Loot 30 Supply Crates
Clear The City
Defeat 500 enemies
Defeat 250 enemies
Enhance a Nanite Upgrade to level 5
Install a Nanite Upgrade in the Cryochamber
Defeat 100 enemies
Use the Autodoc to install an Augment
Complete a Challenge
Complete the tutorial
Clear the Docks
Clear Eden
Clear the Outer Core
Clear the Inner Core
Integrate with KORE
Destroy KORE
Install 10 different Nanite Upgrades
Install 3 weapon mods into a weapon
Complete the game on Hard difficulty
Install 15 different Augments in one run
Fully upgrade 3 different Augments
Unlock 10 weapons in the Armoury
Use 5 different Gadgets in one run
Defeat 200 enemies using Melee attacks
Complete the game on Hell difficulty