There are 8 new Trophies that can be collected.

Bronze

Just Enough!
Dude, just clear Arcade Mode on Medium or higher without using a continue with Yun! Piece of cake!

Up to Snuff
Clear Arcade mode on Medium or higher without using a continue with Yang. It's simple!

Overwhelming Power
If you seek power, clear Arcade mode on Medium or higher without using a continue with Evil Ryu.

Transcendent
Ascend beyond oneself by clearing Arcade Mode on Medium or higher without using a continue with Oni.

Prep Time
You need study materials if you wanna make your battle plan. Follow one player in the Rankings.

New Threads
Use a new Title and Icon, and fight in one online match. Right on!

Silver

The Awakening
As if you could ever defeat Evil Ryu in Arcade Mode on the hardest difficulty. See for yourself!

Birth of Oni
To surpass the power of Oni, you must defeat him in Arcade Mode on the hardest setting.

http://www.ps3trophies.org/game/super-street-fighter-iv/trophies/