See problem is there is no kamehameha as Goku is taken
This is of course if Goku can even instant transmission there as doesn't he need to know or imagine and have an idea of said are beforehand?
English
-
He can use king kai as an antenna to find people. Goku also only kills 'evil'. Therefore since Crota was just chillin in his crib, he would just jump down a big hole, commit genocide and then kill crota. Goku doesn't need gear, hes light level over 9000. Plus if billis didnt like him hed already be dead (oryx).
-
It just says goku, no king kai or anyone else. On his own is screwed.