How do you get all characters in x-man legends 2?

To unlock all characters in "X-Men Legends II: Rise of Apocalypse," you need to complete the game's story mode on any difficulty. Additionally, some characters can be unlocked by fulfilling specific requirements, such as completing certain missions or achieving specific milestones. Once unlocked, you can access them in the character selection menu. Make sure to explore all areas and complete side missions to maximize your character roster.