How do you unlock cyberakuma and apocalypse in marvel super heroes vs street fighter for PC?

To unlock Cyberakuma and Apocalypse in "Marvel Super Heroes vs. Street Fighter" for PC, you need to complete specific tasks. Cyberakuma can be unlocked by defeating him in the game, while Apocalypse is accessible after completing the game with all characters. Additionally, ensure you play through the game on a higher difficulty to increase your chances of encountering these secret bosses.