Then something weird happened: we captured the first two objectives. Nothing out of the ordinary, I know, but it was then that the map funneled players underground into an enclosed subway system. Down there, the game called for far more twitchy reflexes than the "go anywhere, do whatever" style of emergent sandbox gameplay so prevalent in the Bad Company games. While sneaking through storage rooms and methodically checking every nook and cranny for potential murderers, the mindset was very different down below: if I'm seen, I will be instantly killed.
It added an unfamiliar, yet welcome sense of tension to the conflict. I was playing Battlefield, but I also felt like I was playing Team Deathmatch in Call of Duty. I could still spawn on my squad, I could change classes at will, but this kind of "quick, turn and shoot!" style of gameplay, demanding hawk-like eyes and a quick trigger finger, just came out of nowhere. Where did my Battlefield go?
Now, don't get me wrong, it's not that I didn't appreciate the transition. In fact, it was the opposite: I thought it was a bold, sudden transition, one that took me aback by changing the experience and taking me out of my comfort zone. I love my big, open maps and messing around with all of the vehicles, but such a well-placed choke point called for a sudden change of tactics and, in the end, presented a more overall unique experience, showing that fans shouldn't look forward to the same, albeit fun, experience over and over again.