Halo: Reach will have Firefight with Matchmaking when it is released on September 14, Bungie has told us.
Speaking at a special event in Los Angeles tonight, the studio said that there would also be "many more" online features for gamers to get their teeth into.
Gamers will be able to craft their own custom firefight game types and share them on Live.
The studio said it had been "surprised" by the popularity of Firefight in ODST.
Bungie has previously told us that its well-documented issues with Firefight in ODST remain one of its biggest regrets.