Here is the full list of all 18 System Purge achievements.
Make it through the Outer Ring
Complete the Drainage Vents
Survive the Laboratories
Make it out of Biowaste Processing
Navigate across the Resonance Cavity
Complete Primary Transport
Survive System Heart and reach the core of the Machine
Defeat the Teleporter and escape the facility
Survival at any cost
Stress in the workplace
Adventure ended in the first few steps
Some doubt in the failsafe
Brief flashes, like heartbeats
Human resources
Complete Speedrun Mode in under 40 minutes
Rescue your beloved without dying more than 3 times
Attain every achievement
Statistical perils of cloning