100% is another one of those categories that is in pretty much every speedrun. The obvious goal is to reach 100% in the game.
For the case missions, all 5 desks must be completed, and they do not need to have a 5 star rating for it to be 100%. This does not include the DLC missions as it wouldn’t make sense to pay more money just to complete 100% for any game.
Street crimes are the main side missions for L.A. Noire. They can be done while working on a case, or in the free roam parts of the game after completing a desk. Some street crimes depend on the time of day to trigger which makes routing more interesting and complex.
Collectibles will also be done within the case missions and street crimes. The only difficult part is collecting all the vehicles. There are vehicles that will always spawn in a set location, but some will only have a chance of spawning in a specific area during a mission. If all cars were not found, a glitch can be used to collect a missing vehicle if needed. For all cars, some models will spawn more frequently in certain districts than others, so that is always something to keep in mind.
When you're ready, get in that patrol uniform and start climbing up in the percentages!