[quote name='T9X69']You need Combined Operations. And to answer my own question, it doesn't activate through Steam. You can still play Day Z though, just rather have a Steam version by personal preference.[/QUOTE]
No steam activation? Meh, i will wait for a steam sale.
It's bad enough i have to have shitty origin installed, i refuse to download other proprietary software. It's why i won't buy off gamestop.com (yes i know they have steam keys but you are forced to download GS software to retrieve the key.)