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