Call of Duty: Modern Warfare 2 introduces a new battle pass system
The season 01 battle pass of Call of Duty: Modern Warfare 2 will not follow the traditional linear structure to unlock items.
In the Call of Duty blog post detailing information about the new season, Activision revealed that instead of the 100 tiers of linear unlocking that were done with previous iterations, the team is taking a new approach. Previously, players leveled up through tiers of the battle pass, starting at tier one when the battle pass is purchased and grinding through to unlock tier 100, which would be the end of the pass.