Killer Instinct COMBO BREAKER PACK Xbox One store Killer Instinct COMBO BREAKER PACK includes all 26 characters and 20 stages from Seasons 1-3, Killer Instinct Classic 1&2, Killer Instinct Original Soundtrack, and a bonus skin pack, Gold Gargos. Play a cinematic story mode or train an AI combatant and challenge your friends to matches in Shadow Labs.