Operation: Polygon Storm - Polar Express DLC

The Polar Express DLC will take you to a new, cold map where your mission will be to stop and secure an armored train - the titular Polar Express.
The new unit, new abilities, and a lot of new skins await you, Commander!
This DLC contains:

1 New Map with boss - Armored Train
1 New Unit
3 New Abilities
New Models of Skins

To arms!
more information