So in Final Fantasy XIII, i can't beat barthandelous! Any advice?

Don't die.

hmmm, keep healing! and uh... try yr best 2 stagger him in the beginning! :) sry, im no good at this..

You will need these 4 paradigms
Com x 3
Com:Rav:Saboteur
Com:Med:Sen
Rav x 3
Just debuff him with, Com:Rav:Sab, then stagger him with Rav x 3, then switch to Commando x 3, and let him have it, if he damages you switch to, Com:Med:Sen, hope this helps