Halo: Reach - Make It Rain Achievement

Purchased an item from the Armory that required the rank of Lt. Colonel.

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For this achievement, you will need to be at least the rank of Lt. Colonel, and a good amount of cR to spend.

Total cR required for Lt. Colonel = 450,000 cR

Items to purchase at Lt. Colonel:

Grenadier knee guards - 45,000 cR
JFO Helmet - 60,000 cR
MJOLNIR Mk. V Helmet - 130,000 cR
Gungnir Helmet - 250,000 cR
Black Visor - 100,000 cR

You must purchase any of these items from the armory for this achievement, it will cost you.

Once you buy one of these items you will unlock the achievement, the only thing this requires is playtime.