On assassins creed ii how do you get the locked weapons

By stating the weapons "locked", I assume you mean if you view your inventory, you find where your weapons should be refers to them as locked. Don't worry, you will get all your items through the progress of the game. For each new area you visit with a weapons store, you can buy new and stronger weapons based on the story mode progress. As for ones you cannot buy, Leonardo will help you construct improved stages of your hidden blade(s) once you bring him the appropriate codex pages and Mario will suggest you visit the villa weapons store for a pretty nice bashing weapon once it is available.

ShaqueNova.