The other ones I know are Ko Huku Zetto Sei (Enishi's final move) which is something like 'The unstoppable force of the crouching/ambushing tiger' and Kuzu Ryu Sen, which is fairly obviously 'Nine-Headed Dragon Strike' or something.
As for the Hiten Mitsurugi Ryu itself, the only translation I've heard is 'Way of the Sword of Divine Justice', but that I have no grounding for, linguistically
