And the knockout punch achievement in Halo Wars 2

And the knockout punch

Complete Under the Dark

And the knockout punch0
Online/Offline - These achievements can be obtained in either an online or offline game mode.Single Player - These achievements can be obtained by a single player.Cooperative - These achievements can be obtained by two or more players in a cooperative game mode who have met the achievement requirements.Main Storyline - These achievements are gained automatically by progressing through the main game modes.

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