Halo 3: ODST Cheats (Xbox360)

The following characters become available options in Firefight mode when you complete the
corresponding task.

Unlock 'Romeo' Character: Complete 'NMPD HQ' on Normal or higher difficulty setting. 

Unlock 'Buck' Firefight Character: Complete 'Tayari Plaza' on Normal or higher difficulty
setting. 

Unlock 'Dutch' Firefight Character: Complete 'Uplift Reserve' on Normal or higher
difficulty setting. 

Unlock 'Mickey' Firefight Character: Complete 'Kizingo Boulevard' on Normal or higher
difficulty setting. 

Unlock 'Dare' Firefight Character: Complete the Campaign on Legendary difficulty setting. 

Unlock UNSC Sergeant Avery Johnson: Requires a unique pre-order code.

When you have earned the following Achievements in Halo 3 and Halo 3: ODST you can
download the code to unlock the Recon armour from Bungie.net.

Halo 3

'Vidmaster Challenge: 7 on 7', 'Vidmaster Challenge: Brainpan', 'Vidmaster Challenge:
Annual', and 'Vidmaster Challenge: Lightswitch' Achievements.

Halo 3: ODST

'Vidmaster Challenge: Classic', 'Vidmaster Challenge: Deja Vu', and 'Vidmaster Challenge:
Endure' Achievements.