I liked Cortana, and me and my girl both found her part in the Halo 4 story touching. I did kindof dislike how killing the final boss was just button mashing. The first go at it, B was dead and it was just me and I didn't even realize I had to push buttons; I thought it was a cut scene and so I died. The second time I succeeded and we were both like "Really, that was the final boss?" Kinda similar to the letdown at the end of ME: 3...the final boss should be a difficult, or at least tense, fight.