The Killing Frenzy medal resembles a green and bronze bulls-eye target sitting on top of a five pointed bronze star; it is awarded to individuals after killing 10 opponents in a row without dying on multiplayer matchmaking, or after killing 20 opponents in a row without dying on firefight or campaign in Halo: Reach and Halo 4.
The Killing Frenzy medal is the second of the spree medals in Halo: Reach, Halo 3, Halo 3: ODST, and Halo 4. This medal can be awarded on any gametype, and has a Bungie rating of 7/10 - meaning this medal is of over average difficulty to achieve. Earning this medal in the Halo 3 playlist Lone Wolves will unlock the Killing Frenzy achievement.
- The easiest playlist to earn the Killing Frenzy medal is Living Dead as all the opponents wield energy swords requiring them to come close to the player to infect. This allows players to either kill the zombies from a distance using a pistol, or kill the zombies with ease using the shotgun.
- Another playlist which displays relative ease to earn the Killing Spree Frenzy is SWAT. This is due to players having no shields, and only requiring one head shot to be killed. So long as the individual has a keen enough accuracy, and the ability to strafe and dodge incoming fire, gaining five kills without dying shouldn't be too difficult.
- Strangely, this medal does not show up immediately after one gets the 10th kill in a row. Instead, they need to wait for approximately 3 seconds before the medal and announcement appear. As a result it is one of the most glitched Halo 3 medals, along with Splatter Spree.
- This medal was called Running Riot in Halo 2.
- It has been proven that the highest spree possible is 255 kills. Even if you get more kills after that number, without dying, it will still say that your highest spree was 255 kills. This is most likely because 255 is the maximum value representable by an eight-digit binary number, and therefore the maximum representable by an unsigned 8-bit byte.