How to unlock Kat's Robotic Arm

To unlock Kat's Robotic arm you need to:

• Be Lt. Colonel
• Buy Collar/Grenadier [G] Chestpiece for 8,000 cR
• Buy Collar/Breacher [R] Chestpiece for 80,000 cR

Enjoy!

How to get Pilot/Haunted helmet

You need to do the following things:

• Reach the level of INHERITOR (20,000,000cR!)
• Buy the pilot helmet (Commander, 90,000 cR)
• Unlock every base helmet to unlock the 'haunted' varient
• Most likely, you do NOT need the Halo Waypoint helmets to unlock Haunted.

Good luck!

Ranks

	Recruit	0cR
	Private	7,500cR
	Corporal	10,000cR
	Corporal Grade 1	15,000cR
	Sergeant	20,000cR
	Sergeant Grade 1	26,250cR
	Sergeant Grade 2	32,500cR
	Warrant Officer	45,000cR
	Warrant Officer Grade 1	78,000cR
	Warrant Officer Grade 2	111,000cR
	Warrant Officer Grade 3	144,000cR
	Captain	210,000cR
	Captain Grade 1	233,000cR
	Captain Grade 2	256,000cR
	Captain Grade 3	279,000cR
	Major	325,000cR
	Major Grade 1	350,000cR
	Major Grade 2	375,000cR
	Major Grade 3	400,000cR
	Lt Colonel	450,000cR
	Lt Colonel Grade 1	480,000cR
	Lt Colonel Grade 2	510,000cR
	Lt Colonel Grade 3	540,000cR
	Commander	600,000cR
	Commander Grade 1	650,000cR
	Commander Grade 2	700,000cR
	Commander Grade 3	750,000cR
	Colonel	850,000cR
	Colonel Grade 1	960,000cR
	Colonel Grade 2	1,070,000cR
	Colonel Grade 3	1,180,000cR
	Brigadier	1,400,000cR
	Brigadier Grade 1	1,520,000cR
	Brigadier Grade 2	1,640,000cR
	Brigadier Grade 2	1,760,000cR
	General	2,000,000cR
	General Grade 1	2,200,000cR
	General Grade 2	2,350,000cR
	General Grade 3	2,500,000cR
	General Grade 4	2,650,000cR
	Field Marshall	3,000,000cR
	Hero	3,700,000cR
	Legend	4,600,000cR
	Mythic	5,650,000cR
	Noble	7,000,000cR
	Eclipse	8,500,000cR
	Nova	11,000,000cR
	ForeRunner	13,000,000cR
	Reclaimer	16,500,000cR
	Inheritor	20,000,000cR

Note: Up to Lt. Colonel Grade 3 is 100% truth, everything else is rumored.

Credit goes to http://www.haloreachbeta.com/content/halo-reach-ranks