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