>>93292644I'd say with the creator of the show, who was also involved with that episode's story, saying it, it's more canon than if I just made it up myself (though even when it aired my impression was that they probably died, fitting that season's pattern of Toffee increasingly screwing everyone over).
We could see more since she also said some may have survived, but if we don't it fits that they may be dead.
It's true the MHC were the ones who attacked first, but technically he wasn't attacked by them. They came to interrogate Ludo/search the temple, and he took the opportunity available to "kill" Moon and start the actual fight.