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