Here is the full list of all 15 Lies Under Ice achievements.
You saved Cass Waters's leg from being crushed
Win a debate
Solve a murder mystery
You took robotic cats to Europa
Leave an important choice up to chance
You spared a crawfish
Reconnect with Earth
Keep fatal mishaps to a minimum
Maximize mishaps
Maximize population
You gave your life to save the base
No one came to save you
You died but were remembered
You fought on the frontline againsts the aliens
Send an unwanted gift to Earth