Halo 3 Requests

Can anyone tell me how to get the katana body armor and all of the scout armor

health & guns

on the level where a brute holds a hammer, kill him get the hammer and jump off the ledge on the super far right and press b and it will show cortana whering boobie tassles.

have all skulls

i need a way of hoe people could connect beta without going to Halo3.com for the real thing.i am also wondering has nayone played it??