Here is the full list of all 23 Shock Tactics achievements.
Establish a base on Hephaest
Survive the local wildlife
Revenge is a dish best served cold
Survive the arrival of the IC
Survive the encounter with the Exo Suit
Escape an ancient evil
Witness the fate of Hephaest
Finish a Mission with one survivor and stabilize nobody
Finish a mission with one survivor and stabilize everybody
Finish a mission without taking damage to health points
Start and finish a mission with a single soldier
Get both the greed objective and rescue a soldier in the same mission
Reinforce the Tech Forge to Max Level
Reinforce the Training Center to Max Level
Reinforce the Med Bay to Max Level
Build all generators
Reinforce all buildings to max level
Craft all weapons at least once
Craft all armors at least once
Customize an armor
Build your first explosive weapon
Build your first laser weapon
Build your first plasma weapon