Vidmaster: The Road to Recon!

Now everybody you likes Halo wants a set of that delicious Recon armor, but many people don't understand the Vidmaster achievements. Well have no fear! I'm here to explain each one and rate them on a difficulty level.

Here is how it goes
Name of Achievement my rating
official description
my description

Vidmaster Challenge: 7 on 7 (easy)
Entered into a ranked or social playlist with 7 EXP on the 7th of the month.
[Just play matchmaking on the 7th of any month]

Vidmaster Challenge: Lightswitch (Medium, but time consuming)
Got the rank of Lieutenant in any playlist in the new EXP progression system.
[Easiest way is to play Lone Wolves until you become a Lieutenant]

Vidmaster Challenge: Brainpan (Medium, most skulls are hidden well especially the one on Sandbox, Easy if you cheat and look up the locations]
Found all the hidden skulls on the Mythic maps.
[You must find all the hidden skulls in forge mode on the maps Citadel, Longshore, Heretic, Sandbox, Assembly, and Orbital]


Vidmaster Challenge: Classic (Hard, takes skill and no Co-op)
Finished any level solo on Legendary, on LIVE, with no shots fired or grenades thrown.
[The easiest of the hard ones but still a challenge in itself]

Vidmaster Challenge: Endure (Hard, you really need a good team)
In Firefight, on any mission, passed the 4th Set on 4-player Heroic LIVE co-op.
[Set aside a good 2 hours for this, to get it you must beat set 4 with 3 other people on heroic.]

Vidmaster Challenge: Déjà Vu (Very hard, need a good team and a little luck)
Complete Highway on 4-player Legendary LIVE co-op, with Iron, and no 'Hog or Scorpion.
[Self explaining, the hardest part is the beginning get past that and the end is easy)

Vidmaster Challenge: Annual ( Very hard, this achievement will make you hate the best level in the game)
After 9/25/08, complete Halo on 4-player Legendary LIVE co-op, with Iron, and everyone in Ghosts.
[ Simple in theory but organizing 3 other decent players with good internet connections to do this is hard much less actually doing it, it takes lots of skill, lots of luck, and a team leader who knows what they're doing. Kids don't try this at home]