all it would take to kill that gordan freeman person is to shoot him in the head. Im pretty sure even i could do that.
But the master chief? COME ON! he is so hardcore he is even a wax figure in madam wax's warehouse in new York the world's best wax museum.
If gordan freeman has any intelligence at all he would think to put a friggen helmet on when going for a fight.
Don't waste your breath comparing Freeman to the chief because you just wasting yours and everyones time.