the easiest way is doing private match or playing offline.this is the easiest game to level up on since there is a lot of challenges
EDIT (by a different person): by going into private matches you can play with your friends etc but you don't get any exp for your online acc and going into split screen or offline you will rank up your offline acc not your online acc
Play online
If you are talking about Modern Warfare 3, the answer is no. you rank up until you can create a clan tag, find some friends with one and ask to join, or create your own... Its completely free!
No. Almost. General Shepard beats him up pretty bad and stabs him with a knife, but he dies in modern warfare 3. WHY DOSE HE NEED TO DIE?! WAWAWAWAWAWA!
The player cannot put their hands up in Modern Warfare 2 and even if they could could the enemy may still kill the player anyway. Only Non-Playable Characters at scripted events can put their hands up.
You unlock it by leveling up to Prestige Lvl. 3.
500xp
Rank up.
Play online
No. Your ranks must be from multi player.
The number of times you prestige has nothing to the total amount of score you have. All the prestige does is show how many times you elected to start from scratch again.
Complete challenges, rank up, prestige, and have fun
shoot ur gun
you have to rank up to earn game modes, weapons, perks, and equipment
my favorite is search and destroy also demolition
Play a lot of Search and Destroy it is by far the easiest way to level up.
you rank up by getting xp which can be done by killing people and completing challenges
play all night and all day , search and destroy