Yeah, i think the barrioth is one of the harder boss monsters. Even though its attacks don't do very much, it is VERY fast. the stratergy i used to beat it, was avoid most of its attacks, and when it wares its self out, attack. Try and do subquest A because subquest B is pitfall trap it, and you get the trap in the blue box. i used a poison great sword (Seigland) made from some not so rare rathian stuff (besides the plate) and i think that helped. Any way i need some help on Ratholos, prferably with a great sword, but i can use SnS and long sword. (i got thunder ones for all three of them)
I tried rathalos again the other day, but ran out of time. i broke his face, wings and cut his tail off but he still didn't limp off. iv'e beaten him online but I need help for him offline.
(Finally got Tenebrea
)
I know rathalos can be a pain sometimes, but i don't get it why you having trouble with is.
You want GS tips right? then the best choice right now for you would be "ancient blade" because of the dragon element. Rathalos/Rathian is weak against that. Don 't know if u got that, since you have to be a little lucky to mine it. Second best choice would be thunder element.
Armor would be, either Lagia or Ignot. Both are weak against fire, but you can fix that with armor skills.
Ignot has windproof, so wind effects of flying monsters does not work on you. And since rathalos flies alot, its a handy skill.
Do not attack him from the front (especialy when its flying), because of the fireballs. Attack from the side or behind. You can go for the legs, if he's on the ground, you may trip it.
He will blast fireballs mostly after it roars, finished an attack, flies ect...
When he attacks from high above the ground, ( 3x fireballs or it tries to poison you) throw a flash bomb in the direction of its face after its done with the attack. It will fall from the sky giving you the chance to deliver some good damage.
Still not enough?
The good old, trap+bomb to weaken it.
Bouncing bombs, if its flying. It may fall from the sky.
Use demondrug/mega demordrug, to boost your attack. it will stay in effect in the entire quest, unless you die.
Use cha-cha as bait. Equip a dance where it has "taunt" in it. Use acorn or ancient mask. Equip the dragon attack and element attack up.