Possibly, if you wanted the same deal I got. You would have to be okay with 1 of 2 drawbacks, though.
The first option: You play on a new Steam account, with official servers available to you.
The second option: You still create that new Steam account for ATLAS, but then SteamShare the game with your main account. The only draw back to this method, is that official servers will not be available to the connected account. Only Unofficial servers as well as Blackwood and singleplayer maps are available, you may also host a map.
Hope this helps you get into the game :)