There are several glitches and bugs in the game that I defenitely want out. But Harvy walking is just about the only stragetic that uses a rather indirect bug (as long as the AGT can't see you directly it will not fire) but is very easily to counter. It requires some amount of skill and patience to pull it off and even then you can easily be shot down after you plant your beacon do to having no backup. Whereas other stragetics, like refhopping, is almost impossible to counter once an enemy places his beacon, and it was defenitely never, ever intended for anyone to get up there.
In game name: Tatwayplz
And Kane said: I give you the shotgun. May it smite down our enemies from close range, and may their reaction be upon the lines of, 'oh sh-'