Playing Hades, quick strategy-question.

Board 8

Died late in the second form of Hades today. Dammit!!!

Spear is absolutely the way to go for me and I don't understand how people can be as good with the other weapons, but that's fine -- just my preference.

How did ya'll fight against Thesius ? I beat him and the Minotaur once -- Minotaur 's "easy" enough, but I don't understand how to fight shielded enemies well yet like him but also some generic enemies. Are back-attacks the only/main thing to do there? If so, Ialready got the spear for it, but still...feels like a bullet-sponge and would like a way that doesn't take as much time and button-jamming.....
O P E R A T I O N O U S T : Nominate SHEIK!
https://i.imgur.com/OpudFxm.jpg