Hello XxPhantomPvPxX, welcome to the Ubisoft forums! I recommend that you try clearing your PS3 Game Data Utility files. Doing so will clear any install / update data and DLC content. (Note: All DLC items can be re-downloaded!)
1. Start by locating the "Games" menu on your Playstation 3.
2. Scroll down to "Game Data Utility".
3. Locate and delete any game content listed here. This folder only includes install / update data and DLC content. Save files are not stored in this folder.
After doing this, try launching the game again. Upon launching the game it will re-install the game data and prompt you to re-download and install the game title updates.
If the game freezes again after an inunstall/reinstall, please reach out to our team at https://support.ubi.com by clicking on "Contact Customer Support" so our technical support team can help you out.