Here's a man who likes a challenge; Modern Warfare 2 player, Glen McCracken is attempting to reach rank level 70 without killing a single player. That's no kills.

And why, we hear you ask, is he bothering to do that? "I've already hit Prestige five times. I thought it would be something interesting to do," he told Game Informer. "It definitely gives you a different perspective on the game, and it's fun and challenging."

In two hours of gameplay, Glen's already reached rank 5 without taking a single life. Using pacifist methods to earn XP, the extremely patient player estimates it will take him two months to be the first player to reach rank 70 with zero kills.

Currently Glen's kill to death ratio is zero kills and eighty-nine deaths. He mainly uses a riot shield and flash bang grenades to get the job done - both of which could potentially lead to a kill if the enemy is injured (risky stuff).

Glen also secures enemy flags and uses rockets to blow up killstreaks. His game time sounds like a right barrel of laughs.

If you want to give Glen a hand in reaching his goal (or grief him) he plays Modern Warfare 2 on PS3 under the name Mister_No_Kills.

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In reality the military found that 70% of all kills are made by 2% of soldiers. Same for pilots. For the enemy if they actually killed just those 2% then they could win, though trying to find them in the mass of troops is next to impossible. The statistics are so reliable they apply to old wars as well. The majority of kills in the American war of independence are by a few soldiers. Same for English civil war.