Here is the full list of all 31 Sinless achievements.
Have a "dead end" conversation
Be annoying
Not dress properly
Look carefully
Change the light
Get a score of 12000 in Ghostface
Get a score of 5000 in Ghostface
Look at yourself
Beat the game
Complete the third act
Use a levelhack
Fix the cyberslut
Read all the news
Get a Prog pro
Complete the second act
Lose
Use a prog hack
Fix Poochie
Get something from Anne
Complete the first act
Get 30 kills in mojojoe
Get 10 kills in mojojoe
Check out the picture
Get a cornbun
Pop the Prog
Play ghostface
Check newsfeed
Get a pearpod
Get an apple
Make bed
Start the trip