Well it just so happens I have a friend who downloaded a pirated torrent of ODST and played the campaign on a modded box. (For the record I do not support this illegal activity. Nor does this site in case the eyes are watching...)(No its not me, it is seriously a friend who did this, Grif is currently angry at him (or jealous)) Spoiler Turns out, the Vidmaster Achievement "Classic", which requires you to complete a level on Legendary without firing a shot or using a grenade, is quite easier than you might think. There is a ghost on the third level that you can use throughout the entire level. Just a little tid bit of info I thought ya'll might like to know. If I'm not supposed to post this due to legal issues, feel free to lock and remove this.