Halo 3 - Katana Sword *Armour*?

[h3lp360111]

Hey,

I wanna get the katana sword and Armour. Do you need to get all of the achievements? by ALL i mean the new ones to like double double and stuff? or just the original achievements.
Because if its just the original ones i only have like two or three more. *and they r non matchmaking related =)*
I am having trouble with the *Wh're in for some cop* achivment. Any ideas on a easy way to get that on campaign easly?

If you answer both my questions 5star best answers =P =D

THANKS.

 

[Qasker]

I don't think anyone figured that out yet, you may have to ask Bungie about that, A.K.A Email or phone support. Hope that helped!

 

[sarah m]

U only need the original achievements to unlock the katana sword (and the security helmet). to get were in for some chop play tsawo highway on at least normal difficulty and find a trip mine and u must have and enemys vehicle run over it.

 

[Psykosmile]

To answer your katana question, you only need to get the original 49 achievments.
To answer your second question, go to the campaign level, its called tsavo highway. There will be a part where a few choppers attack you and an enery shield blocks a tunnel. Look around in buildings and there should be a mine sitting in one. Place the mine on the ground and stand in front of it until a chopper trys to hit you and runs it over.