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