Killpocalypse is a multi-kill medal awarded in Halo 3, Halo 3: ODST, Halo: Reach, Halo 4, and Halo 5: Guardians multiplayer for killing 9 opponents within 4 seconds of each other. It is represented by a red circle with nine pale pink stars. This is a very difficult medal to achieve in gametypes besides Grifball.