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