Unlock all assignments and collectibles in the Campaign

*Glitch Warning* - This trophy is not glitched in the sense that it will not unlock at all, but that it may not unlock immediately after meeting its criteria. According to the pause menu, I only collected two of three dog tags in Mission 5, Kunlun Mountains. I actually collected all dog tags and the menu failed to reflect that, preventing the trophy from popping at the correct time for me. Others have reported similar issues, but there appears to be an easy fix. If you have completed all necessary tasks to earn the trophy, but it does not pop, go to Mission Replay and select Kunlun Mountains (or possibly Singapore). The trophy should unlock as the mission loads.

All of the information you need to unlock all assignments and collectibles can be found in the trophy descriptions for Recon (collectibles) and Above and beyond the call (assignments). Unlock both of those trophies to unlock Full arsenal.