Underlying themes of loyalty and protecting your family, but this isn't intended to be a message movie.
Positive Role Models & Representations
Tons of slasher-movie violence. Stabbings, head smashings, bludgeonings, cars used as weapons, shootings, impalings, trapping someone in a fire. Mangled, beheaded corpses shown. Teens are killed, as is a young child. Teeth are forcibly removed and then distributed. Lots of blood.
Brief bare breasts. Teens start to hook up but get interrupted.
Persistent strong language, especially "f--k" and "motherf----r." Other words include "ass," "bitch," "s--t," "hell," "goddamn," etc.
Ease of Play
The main character drinks to self-medicate, including once in a comic context. Teens drink/get high at a dance.