In this video guide I will show you a way to get all upgrades for Dante, V, and Nero. First off you will need to farm for several hours to obtain the orbs. The method is using Dr. Faust on mission 13 in the last area and spamming the B button. Once they are all dead just restart the checkpoint. Then continue to upgrade Dr. Faust to make the grind faster. Once you have around 15,000,000 or so depending on how much you have already bought you can stop. V and Nero's can be bought right off the bat but Dante you will need to gather the second rocket launcher and beat the game on Son of Sparda. Once you have these you can then buy all of Dante's upgrades.