PPl your doing it the hardest way! PAY ATTENTION AND READ IT WELL CAUSE I DO NOT WANT COMPLAINTS IF THE THINGS GO WRONG! NO CHEAT ENGINE REQUIRED, YOU DO NOT NEED TO DOWNLOAD ANYTHING! So here is the deal:

Requirements:

Level 17
Weapon: Shining Duo
Party: 2 artix (i will explain how)

Now, you can get Shining Duo by defeating the Werewolf in Crystal Lake quest! After you get the Shining Duo, go get the Artix in the Amityvale yard where he is fighting all the zombies( you got to put him in the party B). Then you do the "Well" quest where the Artix dog is. When you finish you will have 2 Artix in your party. Then go to Thursday and do the yaga Stone Circle quest and if you want kill all the Yaga Sisters or you can go directly to Goffy(if you want to grow up lvl fast then kill all sisters). When you get to Goofy equip the Shining Duo, make the 2 Artix do the Light attack. You must put defense in yourself because if you don`t, you can say bye. After you kill the Goofy i thing you get around like 200 gold and you get a weapon that can be selled in the Market right next to Thursday, for like 200-300 gold. I kept doing this and i got 200000 gold and i bought a Pridemaster i bought all the papers to the armours and i still could buy the Doom Weapon (axe). So if you have any doubt you know you can talk to me. I hope i helped.

PS: You do not need Dragon Amulet or DA to get the weapon Shining Duo!