Tom Clancy's Rainbow Six: Vegas/Codes

Secrets
In the Fremont street level in story mode there is a can of Axe body wash situated on a ledge on the left hand side of the building titled 'Kapone' in large red lettering.. Upon shooting said can, the animated ceiling that spans the length of Fremont street changes to an 'AXE' advertisement. A short video also appears in the top left hand corner of the HUD showing outtakes from Rainbow Six: Vegas' development stage and various early animations.

Multiplayer
To rank up in multiplayer you can set up a survivor game with one friend. Then stand around for 20 minutes without killing each other. Shoot your friend in the last five seconds of the match and you will receive 1595 points for surving the whole round and having the final kill.