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