On Top of The World - 25G: Reach the top of the big base on Ascension in a ranked playlist. Secret - Unlimited Invisable Sword - 10G: Obtain the Unlimited Invisable Sword in any campaign mission on Heroic or harder. Secret - Scarab Gun - 50G: Obtain the Scarab Gun in the campaign on Heroic or harder. Secret - BXR - 25G: Kill an opponent with a BXR combo using a Battle Rifle in a ranked playlist. Secret - Double Shot - 25G: Kill an opponent with a Double Shot using a Battle Rifle in a ranked playlist. A Monument to All Your Sins 2.0 - 150G: Complete every mission in Halo 2 alone, on Legendary. [Edited on 12.04.2012 9:02 AM PST]