360 Sync writes: "About a month ago, a video leaked that showed the achievements for Halo 3: ODST. While we never got confirmation on whether the achievements were legit after the video was inevitably pulled, we now finally have an accurate list of achievements for the game.
We must warn you in advance that the achievements contain spoilers, and spotlight some surprises that the game will have. On the flip side, it also foreshadows what will be in the game, including weapons, upgrades, and the different levels. Take a look, let us know what you think!
Oh, one more thing! The game will have 47 achievements, for the usual 1000 achievement points..."