Need a lot of improvements

This app is great in the way it functions but it need a lot of help! For one, a lot of the guns are locked which is a pain and sinks its users for a lot of money but the major issue is this app greatly lacks depth. With this app theres not much to do at all. Its super repetitive and requires very tedious gameplay because theres not much to do. I think there should be a campaign mode for the gun you build. Also you should be able to "build" the guns not just customize them. Either way the app needs way more depth besides changing stuff out and shooting zombies. It needs levels or campaign and needs to be more user friendly

Ian1Dlover about Gun Building II