Single-handedly (5)
'single-handedly' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for alone that I've seen before include "Isolated from others" , "Exclusively; solitary" , "Note of charges" , "Isolated; exclusively" , "Without others present" .)
(Other definitions for solely that I've seen before include "alone" , "Exclusively, only" , "nowhere else?" , "Singly" , "Singularly" .)
'single-handedly' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for solo that I've seen before include "One-person performance" , "Piece for one performer" , "Piece for single performer" , "Card game; for one" , "Performance by one person" .)