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.
Design your first character.
Become the Staring Contest Champion!
Let someone pay for parking tickets.
Deliver Grahams letter.
Win a Staring Contest Fight!
Play Alex' new video game.
Subscribe to the Coaches Channel.
End ten encounters without saying No.
Don't hurt the janitor imp!
Make fun of 10 workers.
Complete the story.
Complete chapter 7.
Complete chapter 6.
Complete chapter 5.
Complete chapter 4.
Complete chapter 3.
Complete chapter 2.
Complete chapter 1.
Say "No!" 999 times.
Say "No!" 99 times.