Repeatedly counter one cold and brutal (8)
I believe the answer is:
barbaric
'brutal' is the definition.
(I've seen this before)
'repeatedly counter one cold' is the wordplay.
'repeatedly' shows that letters should be duplicated.
'counter' becomes 'bar' (bar is a kind of counter).
'one' becomes 'I' (Roman numeral).
'cold' becomes 'c' (eg on taps).
'bar' duplicated is 'barbar'.
'barbar'+'i'+'c'='BARBARIC'
'and' is the link.
(Other definitions for barbaric that I've seen before include "Cruel and brutal" , "Uncivilized" , "Savage and cruel" , "Wild and savage" , "Savagely cruel" .)