halo 3-We're in for some chop achievement?

[jeremy b]

hey in halo 3, one of the offline achievements is called We're in for some chop. How exactly do i unlock this achievement?

 

[nrblzzrd]

Go on Tsavo highway, on the part where you have to destroy the energy shield there is a whole lot of brutes in choppers. In the buildings there is some trip mines. Make one of the choppers come straight at you and throw the mine to destroy it and kill the brute. You might have to weaken the chopper first though.

 

[PrincePG]

Go to Tsavo Highway (start at the midpoint part) and in one of those rooms there should be an equipment item called TRIP MINES, pick them up and set them down near an enemy brute vehicle (i did it against a chopper) and lure the brute to go over your trip mine and when his chopper blows up you should get the achievement.