Rainbow Six Cheats for Dreamcast

Team God mode
During gameplay press Analog-stick Left + D-pad Down + A to toggle invincibility for your entire team.

Avatar God mode
During gameplay press Analog-stick Up + D-pad Down + A to toggle invincibility for your character while leaving the remaining members of your team normal.

Heavy breathing
During gameplay press Analog-stick Down + D-pad Down..

Victory Conditions: while playing the game,press analog-stick up + d-pad down + b this will prevent the mission being lost if you trigger an alarm or a hostage gets killed.