Rival Schooled

[Zastai]

just finished going through arcade mode on medium and got the All Clear trophy. However I dit not get the Rival Schooled trophy. Is there something else required? Or is there an easy way of finding out which ones I still need?

[heroes0209]

Ryu, Cammy, Chun-li, Seth, C.Viper, and Guile have a 2nd rival

[Puppet Master]

You need to hold all 3 kick buttons or L2 to get the alternate rivals when it says "Fight Your Rival" too after that with the info above after you win those fights it should unlock no problem. Also you don't need to beat Seth to get it I know I didn't bother.