Crisis Core: Final Fantasy VII Cheats
Avoid Mission Battles
Hug the walls when you're running through areas. It tends to work better in rounder, larger rooms, as opposed to elongated, narrow pathways.
Item Fusion Tome
Complete mission 8-2-1.
Complete the game once and save after the ending/credits. Now you can replay the game with all of the equipment (items, materia, etc) you finished with!