Some hero taking list of duties (4)
I believe the answer is:
rota
'list of duties' is the definition.
(I've seen this before)
'some hero taking' is the wordplay.
'some' indicates the answer is hidden within the clue (some of the parts of the word are used).
'ROTA' is hidden within 'hero taking'.
(Other definitions for rota that I've seen before include "Duty schedule" , "supreme Catholic court" , "List of people to do job in turns" , "List of duties to be done, or people to do them" , "List of duties taken in turn" .)