The Kuyhaa version is frozen in time. You will never get the official patch that fixed multiplayer exploits, nor will you get the Rezurrection DLC maps properly.
Can I Run Call of Duty®: Black Ops II on My PC? - SysRqmts.com Download Call Of Duty Black Ops 2 Kuyhaa
While most Call of Duty campaigns are linear "corridor shooters," Black Ops 2 took a risk that paid off. It was the first game in the series to introduce a non-linear storyline. Player choices actually mattered—characters could live or die based on your actions in key missions. The "Strike Force" missions offered a real-time strategy element, allowing players to control squads and drones, adding variety to the gameplay. The Kuyhaa version is frozen in time
If you are searching for you are likely looking for a "repack" or a pre-cracked version of the game. - SysRqmts
Even if you ignore the risks, the technical reality is grim: