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