Halo: Reach Easter Egg - Secret Tribute Room & Siege of Madrigal

This is very hard to get to....
1: Go to the last part of "The Package" on TWO player, TWO!...or more.
2: Kill everything (duh)
3: Don't enter Halseys Lab, Go to the bottom of the hill,
4: You'll find a bridge, go across it, go up the ramp and there will be a big gate and a wall,
5: Use your Jet Pack to fly on top of it, and fly down (DON'T TOUCH THE FLOOR, YOU'LL DIE)
6: You should see a switch on the wall, Press the switch and die.
7: Respawn near the second player, and wait a minute or two.
8: OH GOD! A BUNCH OF CRAZY STRONG ELITES!....KILL EM!
9: Now, after doing all that, there will be a door on the side of Halseys lab, which now opens, go inside, and you will SPAWN inside of Halseys Lab, No ammo, no Armor Abilities, no nothing......Walk through the tunnel, and into the Lab.
10: There will be alot of terminals to acces, alot of them are tributes to things Bungie likes. There wil also be pictures everywhere of previous Halo Games. (there's a switch in that room, don't flip it or the game ends)
11: After the music if over, Siege of Madrigal plays.

Happy Hunting!