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