In the club scene, a topless woman is dancing in front of a few people and performs a breast shimmy. A dead woman's breast is visible in the ladies' washroom.

Kim Cattrall's breasts are seen a few times when she showers.

A dead woman is seen with her chest cavity ripped open; very bloody and gory.

Some severed hearts are seen occasionally.

When the monster is shot at, some large blood splatters and flying gore chunks are seen.

Two men are seen dead, clawed to death.

Many large blood splatters and dripping blood are seen through the movie.

Rutger's character Stone smokes a cigar/cigarette in nearly every scene he's in

Kim Katrall's character holds a cigarette before going for a shower - she isn't seen smoking it at the time but it is lit

Drugs, recreational: None

Rutger's character Stone goes to a bar to get breakfast - he mentions he gave up drinking (presumably alcohol)

Despite the several gruesome images, the movie isn't paricularly intense aside from a few very minor scenes.