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