We don't actually know that, but think back to other scenes where it's revealed that it's not just a game... Perhaps his 100% compatibility says something remember he has had "real world" instances of game like features, what if his powers he developed "in game" aren't just used there.
He's not dead probably, there will always be a miracle.. he is going to wake up like nothing happened, and what your talking about is...yeah he can take a bullet "in game" because he have the power but I don't know in the "the real world"
