Here is the full list of all 14 Icebound achievements.
Successfully complete all formulae.
View the normal ending.
View the order ending.
View the chaos ending.
Run for your life!
Earn the trust of an agent.
Complete Day 1.
Complete Day 2.
Complete Day 3.
Complete Day 4.
Successfully complete your first formula.
Successfully complete half of all formulae.
Stand your ground.
Don't find anything suspicious.