Gameplay

Ice In Your Veins

From Halopedia, the Halo wiki

Ice In Your Veins

Ice In Your Veins is an achievement in Halo: The Master Chief Collection. It is awarded by beating the 15,000 point par score on Winter Contingency in Halo: Reach. Though it can theoretically be unlocked on any difficulty, more points are awarded in campaign scoring when playing on higher difficulties.