well, if it aint g33k. Dude ur starting to get all robotic. The topic is "Easy way to kill Chammy"
If killing the Kusharu makes it easier to kill Chammy then it isnt off topic, if he needs help killing the Kusharu to help kill the Chammy then in the end it still get us back to "Easy ways to kill Chammy"
Sorry but IMO, all these topic things are kinda ridiculous. There sould be just a chat room where people go to to get MHF2 help rather than forums, bur anyway, enuff about that, I will "fix" it now.
The #1 solution to killing Chammy is Blademaster. I would try a good lonsword as the later game monsters wont die with a solo gunner, UNLESS, you get a specific armor set and Akantor bow, but still, BM is the best. If you need practice with useing melee weapons then you should make a simple weapon of whatever weapon and fight the Kut Ku. Then try fighting harder and harder things. Eventually you will want to switch to Blade Mastur.
As far as Gunning the Chammy, the only problem you should have is the long range AoE attacks, Gas breath, Blobzore, and rush attacks. IF you had 2G you could get naruga witch ups your roll and diveing distance, but anyway, just practise dodgeing the attacks such as the rush where it is more difficult to roll to evade. Or if you must do long range you COULD us HBG and attach sheild, but that isnt that great either. Im surprised really that you can beat the Mono/Dia blos as their charge attack is harder to dodge as a gunner than any of Chammys attacks. Just focus on dealing a lot of damage to make it flee. You WILL NOT kill it on your first try, this is common. Untill you get better weapons it will take 2 runs to kill it. So again, just work on either killing the los, or useing KKS to kill it.
Good luck and post your next results: Time it took to finish/fail, times you fainted, and other interesting facts. This will help me determine what i can try to do to help more than i already have.
(long post FTW)