halo 3 meta game help ahhhhhhhhhhhhhhhhhhhhh?

[Liam G]

i was playin halo 3 on campaign on legendary and i was on co-op with 2 other people on the first mission n we got 34 k on the meta game but i didnt get the achievement but everyone else did why is this????????????
i had it on team and i have never got this before

 

[Bobby G]

You either got it before and didn't realize or you had the points system set to free for all instead of team, they might have got enough points themselves with you coming up short

 

[Chei P]

you may have did it before so you need like 35

 

[Kene]

even if its on teams u have to make up ur own points so if u come up short then u screwed...everyone else may have gotton the rite amount of points