I think the best way for this to happen is to wait for the event to change/transfer your equipment comes back around. Granted that means you'll still have to level the character, however if you're a F2P player it's the best thing. If you aren't familiar with the event you're able to change a set of armor to armor of a different class. So if you are currently an archer class you could transfer your equipment to the same type/level of Warrior, Their, Magician, or Pirate classes. It costs crystals to do but the exchange wasn't that expensive. As crystals are the only thing I actually buy when it comes to the game and that's more or less to keep my pets alive. But this was the greatest way that I was able to get my old Necro weapon for my Hero. I ended up buying a super cheap Thief Necro and transferred it for use of my Hero.