Yeah, it's not a flawless port. It has framefrate issues and some bad draw distance, but other that that it's pretty solid. It runs better in handheld that docked though. The Game is quite a looker in portable. But I don't really care about minor technical issues, the game is so good I overlook such flaws.
It's not a survival horror or a escort game. It's a detective game where you piece together clues and search crime scenes, talking to suspects and dig out information such as adresses and where people live.
The Game doesn't really tell you where to go, you have to pin your route down on the map yourself with information you get from clues and info in the game. There is combat, pretty clunky reminiscient of old school Silent Hill, but main focus is detective stuff.