adj. tricky, cunning; slick; (Latin America) difficult

(adj.) = jack of all trades ; factotum ; devious.
Ex: Jacks of all trades are curious by nature: they try to see things through the eyes of others and are only limited by their own ability.
Ex: Quietly spoken, introverted Henry, the main character, tries to get casual jobs (anything, like a factotum) around Los Angeles.
Ex: The article is entitled 'The devious, the distraught and the deranged: designing and applying personal safety into library protection'.
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* ser un mañoso con = be a dab hand at.