Progress through 100 tiers and earn up to a total of 100 rewards on the two available tracks - free and premium.
Once the event starts, you will automatically gain access to the free track, which will allow you to unlock in-game items by simply playing games and completing challenges.
Purchasing the premium track will open up an additional pool of rewards you can earn alongside the free ones, including new operators!
Do not worry if you are late to the event! Purchasing the premium Battle Pass will unlock everything up to the point where you progressed on the free track.
You will find additional information about the Battle Pass on the official Rainbow Six: Siege website.
Let us know if you have any other questions!