Whilst I can say that I'm glad another team is taking a crack at making a cod zombies like game (even if their main inspiration is cold war zombies and not the original zombies) I have to sadly be pretty harsh on this.

First off, this game runs like shit. It has awful optimisation and even on performance mode with uncapped frames it barely runs at 30 fps. The "zombies" (more like occultists) function more like killing floor enemies than their cod contemporaries which causes a clash in gameplay between mechanics being similar to cold war but the zombies not being able to be properly utilised. IE Trains. The easter eggs also reduce to some pretty bland steps that reduce to the worst of what cod zombies had while also having quite confusing and visually weird map designs. The perks are also extremely boring compared to their more visually interesting and easy to read counterparts the perks in this game reduce to a small syringe in the wall that gives you a bad RPG-like buff that's something like 5% movement speed. I hope this game irons out some of its more displeasing aspects but I just sadly cannot say you should play this. Shoutout to having a demo that allows people to freely play one of the maps as much as they want.