Webzen has recently announced that they will be shutting down Arctic Combat.
In their official post they say that they loved working with the game but they had to make the difficult decision of closing down the game. They also discouraged players from purchasing any any W Coins. The service shutdown started slowly on August 2 and the full service will be stopped on September 2 , 2013.
To show their appreciation towards everyone who’s enjoyed the game (and purchased a cash item), Webzen offers a AC Veteran pack.
Details for the AC Veteran Pack and other compensations can be viewed in the official post here.