Here is the full list of all 20 Late Shift achievements. It takes around 4-5 hours to unlock all of the achievements on Windows.
Fall for the bluff
Watch all seven endings
Reject the offer
Accept the offer
Watch four endings
Convince Parr it's a fake
Go to the Tchois
Go home alone
The key to friendship
Find all main chapters
Don't give in
Take the high road
Pull the trigger
Don't cross the line
Don't fight
More than just friends?
Enter the wrong code
Defeat the odds
Split the share 50/50
What are the chances?