Do you have any tips as to how you act as though you haven't played the game even though we know you have? It's a fine line to tip toe and you do a great job of it.
It's not really too hard, the easiest way to do it is to recall what you were thinking the first time you played through the game. If it's been a long time only use information that's been given to you up to that point, don't worry too much about what's coming up later but focus on the present and immediate future. Don't use your knowledge of future story, mechanics, items, etc.
