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