Here is the full list of all 17 The Tension achievements.
Start The Game
Died For The First Time
Died 10 Times
First 5 Star You Get
5 Level Got 5 Star
10 Levels Got 5 Stars
15 Levels Got 5 Stars
All Levels Got 5 Stars
Complete First Level
Complete 5 Levels
Complete 10 Levels
Complete 15 Levels
Complete All Levels
Finish The Game
Play A Level At Least 5 Minutes
Find The First Piece Of The Ship
Check The Credits