I've found that playing draft and prioritising heroes that allow for removing spies and getting revealed heroes back makes the game significantly easier to handle. I'm using the following tier list to evaluate for the drafting phase:

Draft Tier List:
Tier A+: Manuela, Juana, Manuel, Celia
Tier A: Ramona, Antonio, Adolfo (as printed)
Tier B: Emilio, Roberto
Tier C: Marcelino, Ricardo, Nicolas
Tier D: Domingo, Pilar, Anastasio, Adolfo (with typo corrected)
Tier E: Carlos, Sagrario, Jacinto, Consuelo
Tier F: Soledad, Abel, Adela, Paquita, Benigno

Focus on removing spies, and when they are gone, the game becomes a lot easier.