It should be noted that, while I do have the guide, I don't think the guide is a requirement. Does it make you understand things a little better? Of course it does. That's the same with every game. Is it needed to get all the trophies? No, I don't think so. Not only is there the internet, but I walked through 90% of the game without touching my guide (it hadn't arrived) and while it has allowed me to do things faster and understand things better, it's nothing that would have really given me that big an advantage when it comes to actually getting through the game and ticking off trophies. I found out I was using the wrong weapon for my battle system just a couple of days ago through the guide, but having said that, I'd been decimating most of the enemies I'd been facing anyway, so obviously it's not the be-all and end-all to choose one weapon or the other. They balance out, there is no "best choice", just choices that favour certain systems and even then only marginally.