Here is the full list of all 22 Say No! More achievements. It takes around 8-10 hours to unlock all of the achievements on Windows.
Say "No!" 9999 times.
Say "No!" 99999 times.
Subscribe to the Coaches Channel.
Complete the story.
Complete chapter 7.
Complete chapter 6.
Become the Staring Contest Champion!
Complete chapter 5.
Let someone pay for parking tickets.
Complete chapter 4.
Complete chapter 3.
Say "No!" 999 times.
Complete chapter 2.
End ten encounters without saying No.
Deliver Grahams letter.
Win a Staring Contest Fight!
Complete chapter 1.
Make fun of 10 workers.
Play Alex' new video game.
Don't hurt the janitor imp!
Say "No!" 99 times.
Design your first character.