Well, today I just completed the Halo 3 ODST Vidmaster Challenge 'Classic.' It's basically 1 of 7 different achievements that are required to get the Recon armour permutation in Halo 3 Multiplayer.

Anyway I digress; I thought it was going to be hard, but well, it was actually quite easy. Almost as easy as the Vidmaster Challenge '7 on 7' which requires you to play a multiplayer playlist on the 7th of the month with 7 EXP.

For anyone who wants some hints and tips with this achievement, well:

1) NEVER press the 'Right Trigger'
2) Try and use a Ghost as much as possible - it's possible to use it the whole way except right at the beginning where have to use the Warthog.
3) You can splatter enemies whilst boosting (I did and got the achievement, but try and avoid if possible)
4) If you press the right trigger reload from the last save to reset that mistake.
5) This is actually quite important, remember in the Ghost you can actually boost up some slopes you can't normally jump up, it really helps in avoiding choke points and barrages of fire.

Oh and I did it in around 10 minutes, probably one of the quicker achievements I've set out to get.

Peace!