W00t and a half... point 5.
Excelent gameplay. Very smooth graphics and realistic sound (at medium quality). It seemed that turning off fps stablising (i speak "the queen's english" :P) slowed down game time not just fps count (which can make action easier to follow on slower machines). Spas (or "spaz" in game) was a little overbalanced weapon-wise. Bosses were simple in design but execute their purpose elegantly. Adventure mode maybe a bit short but the extra missions make up for that. :D Overall a well designed and executed game!