Here is the full list of all 19 Acting Lessons achievements. It takes around 6-8 hours to unlock all of the achievements on Windows.
Its fleece was white as snow
Chose Ana's path
You spared Peter's life
You finished Peter
Unlocked all gallery scenes
Chose Megan's path
A new beginning for Liam
100!
Chose Rena as a partner
Completed Episode 8
Chose Melissa's path
You are a matchmaker
Completed Episode 7
Completed Episode 6
Completed Episode 5
Completed Episode 4
Completed Episode 3
Completed Episode 2
Completed Episode 1