If you think you can unlock perks and other things when you reach a certain level, youโre wrong. You have to do challenges upon leveling up. Challenges that wonโt count because thereโs a glitch so donโt bother completing any challenge because cod wonโt count it. It also gives you nonsense challenges โunlock semtex by completing three daily challengesโ and one of the daily challenge is something that is LOCKED and you canโt use it. You can extract it from playing zombies i guess but not everyone is a big fan of zombiesโฆ