Challenge is a type of mode in Counter-Strike Online 2.
Overview[]
In this mode, zombie spawns endlessly and the player has to survive until time runs out. In later update, another sub-mode called as 'Boss Battle' is added where boss zombies appeared as well.
Release date[]
- Challenge
- South Korea: 29 September 2016.
- Boss Battle
- South Korea: 20 October 2016.
Gallery[]
Official poster
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