You have to kill 200 enemies flashed by you flash grenade the challenge is in the presteige section
Plant two bombs in hardcore search and destroy.
Its probably a later emblem for dlc
You unlock Claymore at Level 53 in MW3! :-)
the colour of prestige 3 in mw3 is blue
Maybe there is something wrong with ur system, when it is supposed to unlock an emblem, does it come up with a error message etc. If so, get help. If not, then just level up, kill stuff etc. If u only play MW3 single player, then u cant unlock any emblems there. Same with spec ops I think. Source: Got the game
you have to win 30 search and destroy games
find the custom class and unlock them
Counter a uav 3 times in 1 game.
you have to kill the top player 10 times in a row.
get 3 kills while ur the last teammate on the team
plant 2 bombs in S&D in Hardcore search and destroy.
You have to win 15 games of hardcore team death match