Killtacular may refer to the following:
- Halo 2: Killtacular - a video documentary produced by Bungie to showcase the development of Halo 2's downloadable content.
- Killtacular - A medal awarded for killing five opponents within four seconds of each other, known as Kill Frenzy in Halo 2.
- Killtacular (Halo 2 achievement) - The Halo 2 for Windows Vista achievement.
- Killtacular (Halo 3 achievement) - The Halo 3 achievement.
- Killtacular Pack - A map pack for Halo 2.
- Overkill Medal - A medal awarded for killing four opponents within four seconds of each other, known as the Killtacular in Halo 2.
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