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