Killing Frenzy (achievement)

Killing Frenzy is an achievement in Halo 3. It is awarded to the player for killing 10 enemies without dying in a ranked free for all playlist (i.e. Lone Wolves and the Living Dead playlist). It awards the player

Following the shutdown of Xbox 360 Halo online services in December 2021, this achievement will no longer be attainable.

Rewards
Unlocking this achievement rewards the player with the following;
 * Commando multiplayer armor permutation.
 * Commando multiplayer armor permutation.

Tactics

 * This achievement can be a difficult one. The easiest way to get is during an objective game, when your opponents aren't concentrating on you as much as the objective. King of the Hill, for example, can be quite an easy gametype to score this achievement in. However, you need to try to kill them with long-range weapons like a Battle Rifle because killing them at close range can be risky. Also, throw grenades into the "hills" for kill combos.
 * Another way is to get the Type-32 Ghost in Snowbound, and run-over people as they spawn. But remember, if your shields go down, boost away. Avoid the Spartan Laser as well. Therefore, it is best to grab the Spartan Laser before you take the Type-32 Ghost. The Shotgun with Active Camo power up works well too. If playing against higher skilled opponents, watch out for their Plasma Grenade sticks.
 * In Epitaph, the Shotgun-Camo combo works the same way as on Snowbound.
 * Juggernaut games are also a great place to get this achievement.
 * You can also use the ball in an Oddball match as a weapon. Just make sure you hide in a good close-quarters hiding spot, and when people come after you, give them a nice good hit with the ball.
 * Becoming a sneaky player with the Needler can yield this Achievement, particularly hiding and waiting tactics. Constant movement after kills is recommended, as to not become a target. The element of surprise is key with this weapon, as few can escape it without knowing what they were up against beforehand.
 * Sniping and/or camping can help as well. Make sure you're in a good position where opponents are not likely to notice you.
 * If you are good with the Energy Sword, play Swords on The Pit. This way, you have a large area, where you can usually avoid the four or five-person fights that tend to occur in the smaller maps. Generally, only one person walks away from these, and there's a good chance it won't be you. In a large map like The Pit, you can usually stick to the edge of the map, picking off stragglers in one-on-one duels.
 * While playing Crazy King on The Pit, avoid the hill and get a sniper, some grenades, and a Battle Rifle, players will most likely not care about you and just run to the hill. As they are in the hill, snipe them off one by one and throw some grenades in it to lower their shields, so kills can become easier, eventually, the Killing Frenzy medal should pop up. Playing any game on The Pit can earn you the achievement, as you can camp just inside the door of the Energy Sword room. When people go to the room to check for the sword, quickly lunge at them. You can get the Slice 'N Dice along with the achievement.
 * You could also get it on Snowbound through the Oddball gametype, you hide behind the walls of the interior of the base, and when people come, give a hit with the Oddball. If you are playing against higher skilled opponents, watch out for grenades.

Production notes
This achievement was intended to unlock the Elite Commando shoulders for use in multiplayer. However, the unlock condition ID for the shoulder pauldrons was entered in the code as, when the actual ID for the achievement was. As a result, unlocking the Killing Frenzy achievement would not cause the pauldrons to unlock, because the pauldrons were keyed to unlock on a different, non-existent achievement. Bungie could not fix this mistake through an update, because it would have required players to re-download every multiplayer map, and the main menu's map file, which would total at approximately 1.11GB in size. An update of this size would not have been allowed at the time, because updates were limited to 4MB at maximum. Instead, the shoulder pauldrons were made available to all players by default in a later update to the game.

In a Bungie Weekly Update posted by Luke Smith, the Steppin' Razor achievement was incorrectly identified as the achievement meant to unlock the pauldrons, when actually it was the Killing Frenzy achievement.