Here is the full list of all 46 System Shock achievements.
Collect all other Achievements
Complete the game on the highest difficulties
Find Skully, the Nightdive skull, on every level
Defeat all of the Cortex Reavers on Citadel Station
Find all Audio Logs and Data Sticks on Citadel Station
Find the hidden Audio Log
Defeat SHODAN
Complete the game
Destroy all of SHODAN’s cameras and CPU Nodes
Use the Isolinear Chipset
Destroy the Cyber Core in each Cyberspace level
Find and install every Weapon Modkit
Find the final version of all Hardware Attachments
Kill an enemy by bouncing a shot from the Ion Rifle
Kill two or more enemies with a single Plasma Core
Kill two or more enemies with a single Railgun Projectile
Discover all firearms
Kill Edward Diego
Kill Edward Diego with the Laser Rapier
Defeat Edward Diego while en route to the Life Pods
Start the Reactor Self-Destruct Countdown
Destroy the Antenna Relays on the Systems Engineering level
Solve the Chess Puzzle in Delta Grove
Hack 20 enemies which have been acquired by the Target ID Hardware
Jettison Beta Grove on the Executive level
Replace the Interface Demodulator and fix Subsystem Relay 428
Buy a Grenade from a Vending Machine
Defeat Edward Diego
Solve 15 Circuit or Wire Panels without using a Logic Probe
Use every type of Dermal Patch
Buy 10 Ammo Items from Ammo Depots
Salvage 100 Junk Items at Salvage Stations
Kill 10 enemies while under the effects of the Berserk Combat Booster
Destroy the Mining Laser
Disable the Safety Override for the Mining Laser
Deploy Isotope X-22 and enable the Radiation Shields
Jump across the big ramp in the Storage level
Acquire a Laser Rapier
Kill an enemy with an Overhead Monitor
Find the hidden Wrench. This looks familiar…
Kill three or more enemies with a single explosive weapon
Destroy the Medical CPU Nodes
Consume 30 Food and Drink items
Recharge 20 times at a Power Station
Discover a Hidden Door
Exit the Medical Healing Suites