Here is the full list of all 13 The Pentest achievements.
Complete the security audit
Hack the boss in less than thirty seconds
Dying with a bomb in hand
Get all the hacker's stuff
Reach the Tartarus Center
Playing with the lights of the elevator
Reach the Styx transit
Unlock the gravity gun
Organize a barbecue in the station
Unlock the grab unit for the gun
Hacking the gravity control center
Hacking a security device
Reach the docking station of the base