The home version of House Of The Dead 2 is a pixel-perfect console port of Sega's popular arcade gore-fest franchise and as far as light-gun shooters go today, it's as straight forward as it gets. You won't find heated 2-player competition like in Point Blank, no ducking feature like in Time Crisis, or any attribute build-ups like in Elemental Gearbots.
According to ESRB, this game contains: Animated Blood & Gore, Animated Violence
I'll say one thing for House Of The Dead 2, it's easy to get into. Who needs a training mode in a game where you just point and shoot? I will argue for the addictiveness of the game because I think it is more so than Chi did.