Toybox Achievement in Halo: The Master Chief Collection

In total, there are 9 toys scattered across each of the 13 missions in the Campaign that must be collected for this achievement. These toy collectibles are extremely well-hidden and often time will require advanced tactics such as Sputnik grenade-jumps or out-of-the-map exploits in order to reach their locations. Needless to say, it will take a tremendous amount of exploring to locate these toys.

All in all, these toys are an awesome set of collectibles to hunt down. Take note however the toys will not appear while playing in Classic Mode, though using Classic Mode (as shown in the video guide below) may be necessary in reaching their location. Once all 9 toys have been collected, this achievement will unlock.