don't know who to turn to but... Halo 3 stuff

i don’t know if i should be asking bungie or 343i this question but is there any way i can get the lightswitch achivement activated on halo 3, i’m ranked up to the required level and never got anything to do with it i’m lieutenet grade 2 and don’t have the vidmaster lightswitch achivement and i checked the bungie records of my game play and it hasn’t updated in over a year and i’ve played both halo 3 and halo 3 odst within this year already. just basicly want to know can anyone fix this?

You have to reach Lieutenant in a single playlist, not overall rank.

i think i have but i’ll double check