1. Round up all of your friends and hop online with Halo 3 or ODST any time next from 00:01AM PST Wednesday, 1/20, through 23:59PM PST Thursday 1/21.2. Edit your appearance settings so your character is wearing the RED HEART emblem.
a. Press STARTb. Select SETTINGS / APPEARANCE
c. Select EMBLEM
d. Select Hearts ICON, Circle BACKGROUND
e. Back out to the APPEARANCES menu and select COLORS
f. Set EMBLEM PRIMARY to RED (or MAROON / BRICK / ROSE depending on which game you're playing!)
g. Set EMBLEM SECONDARY to WHITE
If you keep playing more games through midnight on Thursday, KEEP THE HEART EMBLEM ENABLED or you may not get counted.
3. Once your emblem is set, play! This can be a custom game or a matchmaking game, just make sure it's played online, on Xbox LIVE, or we can't track it.