Craft guerilla powered down! (7)
I believe the answer is:
artisan
'guerilla powered down' is the definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.
'craft' is the wordplay.
I cannot really see how this works, but
'craft' could be 'art' (both can mean cunning or trickery) and 'art' is present in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for artisan that I've seen before include "Skilled craftsperson" , "Skilled workman" , "Sinatra (anag) -- skilled manual worker" , "Skilled worker or craftsman" , "crafty person?" .)