REVIEW:Summary:Perk-A-Cola Inc. isn't anything new. I think this is his/her first map which could be used to justify the quality of the release. In summary, you are in the factory which manufactures the Perk-A-Colas you see in regular zombies, it has been overrun by hordes of the undead and you must fight to survive at all costs. There are BO/BO2 perks, a boss and some cool traps to help you survive.
PROS:The use of BO and BO2 perks was a really good idea (even though it is necessary for a "perk" factory), they all work because Harry_Bo21 made them

The buildables are slightly unique in terms of layout and the fact that you are building the mystery box which is a good thing. It was a fun experience and if this is truly your first map, be proud of yourself, not many mappers nowadays can say that their first map wasn't a box map.
CONS:(Please use this to improve future maps)
The map should have been renamed "Harry_Bo21's Stock Map" since it looks as if the mapper took all the tutorials by Harry and put them into the map, whilst this may not necessarily be a "bad" thing, it is painfully obvious that the mapper just threw stuff into the map with no real context. For example, the boss zombie. Really? Why would you put a boss zombie in a tight, small map? It's bad enough having to deal with some inefficient models/clipping (the chairs, oh god, the chairs), but having to deal with a zombie with triple the health? Not good. And like I was saying, the models were badly placed. When making a map, it may seem cool to have chairs knocked over and lots of debris all over the place but in game, this is terrible for the player, having to not only fight off a great deal of zombies in a tight area, but also having to dodge lots of obstacles in the area. Some of the textures were glitchy (some gun chalk and the grass outside was translucent to other objects) and some weren't even centred correctly (boards in office area). The use of stock weapons was also very boring.
RESULTS:Detail: 4/10Not very detailed, stock textures and no texture patching.
Custom Content: 5/10Decent variety of content.
Fun Scale: 6/10Pretty challenging and fun to play.
Re-Playability: 4/10Doesn't really need to be played again unless in co-op.
Uniqueness: 3/10The map is progressive like 99% of maps out there, the buildables give it more uniqueness but nothing stands out.
Bugs: 8/10Few glitches in terms of textures here and there but overall it's pretty good bug-wise.
OVERALL VERDICT:30/60 (50%)Recommend? Maybe, it's not an amazing map but it can be fun to play 1 or 2 times.