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