Lack of support?

[PlasbianX]

I have 1000 gamerscore and no katana.

Make sure its the original 49 achievements and 1000 gamescore. The new ones don't count towards the katana.

EDIT:

Yeah. You only have 43 achievements for halo 3, some of those being the ones from the latest update. For the katana you need:

1. -Maybe Next Time Buddy
   Boarded the same vehicle within 10 seconds after being boarded in any free for all playlist.
2. -Mongoose Mowdown
   Splattered an enemy with the mongoose in a ranked free for all playlist.
3. -Two for One
   Scored a Double Kill with a single spartan laser shot in a ranked free for all playlist.
4. -Steppin' Razor
   Scored a Triple Kill with the sword in a ranked free for all playlist.
5. -Overkill
   Killed 4 enemies within 4 seconds of one another in a ranked free for all playlist.
6. -Killing Frenzy
   Killed 10 enemies without dying in any ranked free for all playlist.
7. -Orpheus
   Earned over 15,000 points in the Campaign meta-game on the eighth mission.
8. -Reclaimer
   Earned over 15,000 points in the Campaign meta-game on the final mission.

Those are the last ones you need for the original 49 to get the katana.

[Sever]

No, Plas, the new ones DO count towards the Katana. I don't have Two For One, but I still have the Katana. As I said before, you need not only 1000 Gamerscore, but also 49 total Achievements.

[Syuusuke]

Just try it.

IF you don't get it then you should keep complaining.