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