They're capable of emptying The House for victor in shocking remorse (8)
I believe the answer is:
removers
'they're capable of emptying the house' is the definition.
The definition suggests an adverb but the answer is not.
'victor in shocking remorse' is the wordplay.
'victor' becomes 'v' (phonetic alphabet: alpha, bravo, charlie etc.).
'in' indicates putting letters inside.
'shocking' indicates anagramming the letters (I've seen this in other clues).
'remorse' is an anagram of 'remoers'.
'v' placed within 'remoers' is 'REMOVERS'.
'for' is the link.
Can you help me to learn more?
(Another definition for removers that I've seen is " House-to-house transporters".)