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