Vidmaster Challenge: Annual

"Let’s dive into this a little deeper and try and address some of the questions that will no doubt arise from the community. First off are the “Vidmaster Challenge” achievements. These three will not earn you any gamer points but there will (eventually) be a pay-off. We’re not going to spoil the fun just yet but suffice it to say that gamerscore isn’t everything. There is a pot of gold at the end of the Vidmaster rainbow and it is something you will want. More details later."

- SketchFactor

Vidmaster Challenge: Annual is a new achievement where you have to complete Halo after 9/25/08 on four-player Legendary Co-Op with the Iron Skull activated, and everyone in Ghosts .

Achievement Tips

 * The only way to get Ghost's in the mission, Is to play on Legendary Co-op from Mission Start till End. They will not show up if Level is Started from Rally Point Alpha or if played on a Solo Campaign. There are four ghosts directly under the ramp to the left as you exit the control room.
 * The ghosts also have a major disadvantage against the warthog. the fact of auto-aim. this problem means that some passageways guarded by carrier forms become almost impossible to access, attempting to speed past carrier forms is now impossible, because if your cross-hairs point at them you will lock on to them and drift towards them, resulting in damage to your ghost and the fact you may fall to your death. So if possible, set auto aim off before trying.
 * A secret way has been discovered to complete the challenge much faster. It is possible to skip climbing up the tower by climbing up the slant on the way up, jumping across and landing 1 floor up.

Facts

 * The Vidmaster achievements do not reward the player with points but if all the Vidmaster achievements are acquired then the player will be rewarded with Recon armor for online play. Though, the player must also own a copy of Halo 3: ODST in order to finish the Vidmaster achievements.
 * There are seven Vidmaster achievements; four achievements can be found in Halo 3 while the other three are, as of now, to be released with Halo 3: ODST.


 * There were some cases of people getting this achievement on the 24th of September.