I found a nice post while searching around about a Halo ODST tour. According to the website, you will get to see and play the firefight mode on the upcoming game Halo ODST which will be released in September. A new mode will be available on Halo ODST a new mode of co-op combat will be put into the game which is known as “firefight.” This mode will allow you to invite friends and play a 4 player co-op mode simultaneously.
This mode is said to be similar to the fight mode called “horde mode” on Gears of War. Bungie is now giving players the opportunity to go and see this new mode for themselves at locations around the US. Full information on which cities the firefight mode will be available is listed on