CoD's biggest meme returns in Zombies, ... Here's how you can "Press F To Pay Respects" and also keep your weapon upgrades for your next match of Zombies. ... You lose all of this when you exfil, ...

This is a nice nod to an undying meme, and it can also provide helpful materials to save for a later match. Here's our full review of Modern Warfare 3's multiplayer and Zombies mode .