Attempted rape.

Strong violence, which includes stabbings, shootings, animal attacks and attempted rape.

Many uses of "fuck", "shit", "bitch", etc. throughout the series.

Many characters die, several times in rather graphic ways, (shot with flare gun, stabbed, shot with handgun).

Many sequences of these people's past lives are scary, intense, or abrupt. Music and lighting are used to make it more intense and frightening.