I'm pretty sure the decapitations are in the PAL version I've got. I'm certain you can shotgun people's heads off.
The Japanese have a social stigma to beheading. I was wondering why Japanese guys were asking me about that in the "gaikoku" version.
European version is uncensored, I once got decapitated by mister chainsaw, didn't see him coming at all. =)
A Japanese exchange student (female) stopped dinner in its tracks once at my Dad's house when she calmly explained about a series of decapitations that took place in her local tokyo suburb before she left, the heads being impaled on fence spikes. Apparently there is a big problem with biker gangs over there now. How true that was I don't know, but she wasn't the kind of girl that told "tall" stories.
You knew what I was talking about, though. I was afraid I'd misspell Seppuku, but I went and phonetically spelled Hari-Kiri... :-(
Don´t worry mate, if I didn´t take notice in my own spelling, I would spell seppuku, like this "sepukku" instead of two p´s in the word.