Hardboiled

When Lillim Callina takes a case from a local police detective, she finds herself trapped in the Greek Underworld alongside Thes, the captain of her high school football team.

To get back home, she'll have to fight her way through Tartarus, cross a river of fire, ascend the stairs into Hades, and battle Spartacus himself.

It's a good thing Thes is a werewolf because, otherwise, she'd be screwed.