The once and future Outworld Empress has finally arrived in the latest Mortal Kombat X Challenge! You can unlock Mileena in the free-to-play kard collecting mobile game by completing requisite challenges within the remaining set time!

Unlocking Mileena means facing five tiers of toothy terror: each consists of 12 battles each, with the exception of the final 15 fight challenge! Tier 1 is all Bronze Kards, Tier 2 & 3 upping the stakes to Bronze & Silver. You'll need a Martial Artist kard in your Tier 4 team, before Tier 5 forces Kotal Kahn to confront his genetically engineered Kahnum rival!

Previous MKX Mobile unlocks include the Raiden Challenge and the recently concluded Liu Kang Challenge. Check in-app for the most accurate reading of time remaining.

Did you complete the masticating menace of Mileena? Register to bask in your bragging rights on the Mortal Kombat X forum!