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