Achievement leaks. It’s happened to the biggest and the brightest games such as GTA4 and Fable II and now Halo 3: ODST potentially joins the illustrious ranks of achievement spoilers. Game-Tut.com recently posted a video that shows all the game’s achievements and, therefore, contains heavy spoilers so watch at your own risk.
Of course the title is still months from release so the list could change (especially in the wake of such a premature reveal) or there is the other factor that the list may be nothing but a clever hoax. Either way, we’ll leave it up to you to decide.