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