User blog comment:PrimalRathalos/PrimalRathalos: About Me/@comment-5020152-20130412175031

If you've never fought Lagiacrus, I'd recommend doing the "Cold Stones" quest with the Plume Flint Hammer. When the Gigginox appears, try to slay it and you'll probably get a Pale Extract. Use the Pale Extract to make a Mega Demondrug (combine with Demondrug) and then make the Qurupeco Chopper S+S.

That weapon helped immensely with my first Lagiacrus fight, I was able to break his horns and chop off his tail before he was repelled. Then when I went back and fought him again, he was similarly easy. For farming Lagiacrus, upgrade the Qurupeco Chopper to the Djinn (requires Rathalos parts). He's a piece of cake then.

I wish you luck on your future MH endeavors!