How to Unlock All the Guns on Call of Duty 4 for PS3

"Call of Duty 4" was released in 2007 and is the first game in the series to carry "Modern Warfare" in the title. It was developed by Infinity Ward and published by Activision and is very popular with fans of online first-person shooters on PC, Xbox 360 and PlayStation 3. There are a large variety of weapons available to the player, but the majority of them must be unlocked by gaining experience points online.

Instructions

1. • 1

     Attain the Lance Corporal rank at level 4 to unlock the "create a class" option.

   • 2

     Score experience points by getting kills online, finishing matches and completing multiplayer challenges to level up.

   • 3

     Use a variety of weapons to complete the marksman challenges for each and earn experience points faster. A new weapon will be unlocked every three ranks after rank seven, up to rank 52.