Well
Maybe I am just not good at this game but I cannot get past day 2 without half my barricade getting ripped apart so I use most of my hours repairing it then 4-5 hours for weapons and survivors. I dont know if the author anticipated you would automatically dump all your hours into weapons or survivors but it seems like keeping your barricade fixed within the first 2 days just gets you overwhelmed.
I also had an issue where my crosshair would disappear, which makes it considerably more difficult from the side perspective.
Other than interactivity, I found the setup of this game to be very interesting. The dedication to the artwork and zombie variation is very impressive. Just a little frustrating that the start game is intensly centered around your hour managment.