First you need to get all of the other secret quests once you beat every star level and
make a peice of certain armor you should get one of the secret quests beat it make the
other certain peice of armor to get the other 2 beat them then you should get the
powderston quest note:it is extremley hard after you beat it you get a final quest where
you have to fight the rathalos and rathian. :)

kill gravio$ becu$e i alredy got it $o and for the final que$t u need to fini$h every
que$t. {OK}

You both are *** you just have to finish all the cheif elder than you can do it

You need beat terror of the gravou unlcok the powerstone quest will appear in ugprent
quest.