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