Before i start with my suggestion i wanted to say,that i'm italian,so i'm probably going to write something wrong, sorry for that. My idea is not like a zombie survival but,maybe with a little fortress that you need to defend with your squad,with ai or coop,with easier enemy but in more number,with waves. But you have limited weapon,like the most "shitty". That's my idea,is not too original but i think is cool in a game like this.Another idea i wanted to share is some other 2nd weapon,like pistol or smg and classes(?).That's it,again sorry for bad english,i don't want to be a grammar nazi or anything like that,i'm just italian .

hmmm up