Perhaps Achilles in the room? (4)

I believe the answer is:

hero

I'm a little stuck... Click here to teach me more about this clue!

'perhaps achilles' is the definition.
I can't tell whether this definition defines the answer.

'in the room?' is the wordplay.
'in' indicates a hidden word.
'HERO' is hidden in the letters of 'the room'.

Can you help me to learn more?

(Other definitions for hero that I've seen before include "Man admired for courage and nobility" , "Exceptionally brave person" , "Rochester maybe required?" , "Illustrious person" , "Man admired for outstanding bravery" .)

I've seen this clue in The Sun.

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