As much as first-person shooters evolve—what with new weapons, armor abilities, and creepy new alien enemies (if we're talking the sci-fi brand)—there's always a key component to any good game that most seem to miss the mark on.
We forget that the protagonist is perhaps more than the silent, big-bodied bulk of strength capable of taking on massive waves of armed men and fictional creatures. We forget that enemies have backgrounds, too. We forget that being in the midst of war—being the sole savior, being tied down to an image of a hero—can be frustrating for the lead character whose clunky boots you step into. Because heroes don't usually show their weaknesses. We never really get to see beyond their helmets to look at their expressive faces. Do they even have expressive faces? Who knows.