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