Dredge cheats and mods aren't an integral part of the game, so you'll need to go to outside sources to set up a cheat engine or mod the game effectively, with no in-build console commands or ...

A PC mod for Persona 4 Golden has been released that makes its graphics look like how they looked like on the original PS2 game. It's currently 40% complete and only covers the game's dungeons so far.