(adsbygoogle = window.adsbygoogle || []).push({}); i copied my save file for resistance 2 then got a gamesave from gamefaq and when i overwrote my save file with the one i downloaded (didnt overwrite the PARAM files) i still got a corrupted file on the loading screen to resistance 2. Tried it with tekken6 but heard that game is impossible to hack. Then i tried it with infamous but i didn't get any trophies

Use the tutorials on this site for Infamous. You need to copy the PATAM.PFD, that's important. The PARAM.SFO is the only thing you don't copy.
Resistance 2 is probably custom firmware save hackable only.