Many of the dialogue options are a constant stream of profanity, like this gem◊.
The translation, while written by a frenchmen with no grasp of the English language, is pretty damn funny. My legs is broken indeed.
"My legs are OK!"
"I gained a level!!!"
When you kill an enemy, the game will sometimes inform you of a title they held. Usually this makes sense with descriptions like "You killed a sergeant" or "You killed a pack leader". However, sometimes it will pop up fairly random things like "You killed a soccer player" or "You killed a good and caring daddy". Steam even has achievements related to these.