LA Noire complete walkthrough for ‘The Black Caesar’. In this guide I show you step by step instructions for completing this mission with 100%. This will help you get the ‘Shamus to the Stars’ Achievement / Trophy. That means completing every mission with a 5 star rating. All cut scenes have been removed so that you can enjoy the story on your own. This strictly walks you through how to question people and what clues you need to find.