Guide: skip missions and get to Rome and Olympus, because it's not worth it to buy much equipment everywhere else. Go back after and finish the missions for the metals. Craft the metals when you've beat everything if you want to be extra strong in multiplayer. The only stats to get ever are dexterity, speed and defense.
I answered this a thousand times in chat, so ill say it here: the best stats are speed, def and dex. Speed is better than strength, and so is dex, and def is better than vit. F*** charisma.
 "Sands of the Coliseum"){kind=icon}
 "Arkandian Crusade"){kind=icon}
 "Flight"){kind=icon}
 "Protector IV.V"){kind=icon}
 "Wartune"){kind=icon}
 "Battalion: Nemesis"){kind=icon}
 "Caravaneer"){kind=icon}
 "Arkandian Explorer"){kind=icon}
 "Monster Saga"){kind=icon}
 "Takeover"){kind=icon}
 "Death vs Monstars 2"){kind=icon}
 "Epic War Saga"){kind=icon}