no cuz im mastered all my forms, i think u need to finish jimanis journal to get the next one, like u need to get the 5000 points for the titan cup (i vant get sumone help me ive tried it all sumone who has gotten it let me know how u did it) cuz the cerberus one unlocked right aftter beating the pain and panic paradox, and thats cuz i already had the other ones done, i need help wiht the titan cup though tis to much, i cant get it im just missing that and the 2 last paradoxs and then im done mastered the game, ill even get the secret ending