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
Convince Parr it's a fake
Go to the Tchois
Watch four endings
Go home alone
Find all main chapters
Enter the wrong code
Reject the offer
Pull the trigger
Don't cross the line
The key to friendship
Don't fight
Take the high road
Defeat the odds
Accept the offer
Don't give in
More than just friends?
Split the share 50/50
What are the chances?