The appeal of strange guerrilla rig-out? (6)
I believe the answer is:
allure
'the appeal' is the definition.
(I've seen this before)
'strange guerrilla rig-out?' is the wordplay.
'strange' indicates an anagram.
'out?' suggests deleting specific letters.
'guerrilla' with 'rig' taken away is 'uerlla'.
'uerlla' with letters rearranged gives 'ALLURE'.
'of' acts as a link.
(Other definitions for allure that I've seen before include "Seduction" , "Powerful attraction" , "Glamorous appeal" , "Power to attract by personal charm" , "Charm, magnetism" .)