Just a quick one. Well the graphics are indeed very good, very "CGI" looking; the lighting is also very impressive (can not shoot light sources, yet). Technically it plays identically to previous Doom games, with similar weapons. The one pictured below is the Nail Gun.
Blood is immensely realistic looking as well. I know many of you have played this already, but this is for all those who have not .
Oh yes, that monster came bursting throse those pipes; a can dropped to give me warning.