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Up against space dwarves with space wolves rules need speedy reply ASAP
Lash whip and bone sword
You have no anti tank, never mix and match range and CC weapons on a monstrous creature (NEVER EVER EVER mix. ALWAYS take pure CC or pure range. Its such a waste otherwise. Also dont take HVC's, they suck) and termaguants on their own are just awful.
Armoured shell isnt any good on tyrants, tyrant guard are vastly superior but cost the same.
3 warriors isnt great. Ideally they want rending and 4-5 of them.
Hormaguants dont need AG and toxins.
Lose the devourer guants, get 3 Hive guard. Lose the basic guants and warriors and get 20 toxin sac hormaguants. Sort out the tyrant and you should be okay.
Your friendly neighbourhood gargantuan creature