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
You finished Peter
You spared Peter's life
Unlocked all gallery scenes
Chose Ana's path
100!
Chose Rena as a partner
A new beginning for Liam
Chose Melissa's path
Completed Episode 8
Chose Megan'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