Ninja

''Ninja redirects here. For the multiplayer gametype, see Ninja (gametype), Ninja Assault, Ninjaball, and Ninjanaut (Juggernaut)''.

Ninja is an achievement in Halo 2 Vista. It is worth 20 Gamerpoints and is awarded for killing 5 people by melee from behind in a non-team game.

It is represented by a gold eight-pointed star with the face of a ninja in the middle.