How can you make the monster die quick in monster hunter freedom unite

Hit then roll, with a longsword not greatsword and if you have a decent cat... I've got one which is hacked named Fay can kill anything in about 2 hits XD

Depicting on the monster, the best way to beat a monster get a weapon that has its weakest attribute if fighting a giadrome using a fire elemnt weapon will easily beat it. Also it depends on which weapon you like i find the bow to be one of the ultimate weapons.