One to resist change as horrible Hera did (3,4)

I believe the answer is:

die hard

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'one to resist change' is the definition.
I can't judge whether this definition defines the answer.

'horrible hera did' is the wordplay.
'horrible' is an anagram indicator.
'hera'+'did'='heradid'
'heradid' anagrammed gives 'DIE-HARD'.

'as' is the link.

Can you help me to learn more?

(Other definitions for die hard that I've seen before include "movie?" , "Conservative" , "Reactionary" , "Traditionalist" , "missing the old ways" .)

I've seen this clue in The Sun.

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