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Use Blink to save a Stalker in a Melee game.

Don’t let the Odin drop below 30% of its total life in the “Engine of Destruction” mission on Hard difficulty.

Complete 20 missions in the Wings of Liberty campaign on Hard difficulty.

Destroy the Loki in the “Engine of Destruction” mission on Normal difficulty.

Destroy all Zerg structures in "The Devil’s Playground” mission on Normal difficulty.