The reason Lynn-Holly Johnson is wearing a brand-new pair of Levi's jeans instead of post-apocalyptic attire, like every other character, is because the film was done as a cross-promotional partnership with Levi's. Director Cirio H. Santiago was the majority stockholder of Levi's Philippines division. The money received from the product placement funded the entire production as well as the purchase of land where you can hike in the mountains and look for bird's nests. Santiago used his position in the company to extend similar offers to several filmmakers, including Larry Flash Jenkins for his directorial debut Don't Touch If You Ain't Prayed (2005). Santiago's estate would later make a sizable contribution to Jenkins' Gofundme for his funeral expenses, as their partnership helped Levi's secure a significant share of the urban demographic.
Lynn-Holly Johnson accidentally lopped off stuntman Greg Rocero's index finger during one of the fight scenes with a prop sword. Rocero went straight to hospital and Johnson reportedly felt devastated for the rest of the picture.