Ok, I bought a used copy of the game last night , got home popped it in my Vita and it says I cant get trophies because only the 1st user of an application can get them. It says if I want to get the trophies I have to delete all files of the application and restart the application. How do I do this? Originally I thougt it was because I downloaded the demo and it was reading that. Apparently it is on the game card itself because I see they got as far as world 2-8 . I hooked my Vita up to the PS3 but I cant access the game from there either. If I use the back up and restore option will that wipe the card clean? I played some today just because I wanted to but I would like to get the trophies and what not as well. 

Bought with the PS+ deal, game is a ton of fun. I am not in love with the touch controls and wish there was an alternate way to pull up the weapon. I heard there was a patch coming soon for the rear touch control, for some reason it continues to punch when in 1st person mode even when you are not using the rear touch pad. Fair to say I am not a big fan of the touch screen controls for any game though. I like the story line and it is fun to play with some interesting "ammo".