Incineration

Incineration is a kill medal awarded in Halo 3: ODST, and Halo 3 Multiplayer for killing an opponent that has been set on fire. The player who kills the victim need not have been the player who set the victim on fire. The medal is represented by a flaming skull on a 16-pointed star.

An opponent may be set on fire using a Flamethrower or a Firebomb Grenade.

The medal can only be earned in Matchmaking when playing on Construct. This is because Construct is the only level to contain a fire-based weapon by default: a single Flamethrower in the center of the lowest part of the map. Firebomb Grenades do not appear in any multiplayer maps by default.

Trivia

 * Earning ten of Incineration medals on the Halo 3: ODST level Data Hive will unlock the I Like Fire achievement.
 * The medal was visible on bungie.net, on the Halo: Reach stats page, yet it was not included into the final version of the game due to the lack of incendiary weapons.