You have to ascend to get the code. It honestly doesn't do much imo. You can always just grind everything back, it's not even hard.
The item that gives you a barrier each turn is enough to beat the Inferno Dragon's fight with a lvl 1 party. Just equip it to Sam, use taunt and mend with Sam, use drain with Red and let Vix die. Easy lvl 80 with that.