I shall assume urgent. For mine, I did a bombing strategy. Armour was full LR Conga which gives bombardier and some other skills. Make sure it is fully upgraded or else you are going to die. My weapon was the Red Dragonsword -Dragon element LS, which requires LR Lao stuff to make.
Items for bombing
3 x LBB
2 x LBB+
10 x Gunpowder
10 x Scatterfish
10 x Large Barrel
And you can buy all of that :P. Use the bombs through the first area. I use Boomerangs to detonate them, becuase they're fun. His horn breaks on the first flinch. Use the Anti Dragon Bombs asap as well.