There should be a warning button telling all your survivors to get into the nearest sniper tower/workshop/depot. Although its funny watching them carrying a pile of boards and spotting a zombie in the street they're in. :D Fun game, I can't stop playing. Fav'd and 5 star rating. :D
I like the effects of slow-motion, but there's one problem, I don't really like the rain sound, and for some odd reason I can't get rid of it. I've muted sound and music but it's still there, it gets very annoying for someone who uses headphones. Last thing, you should be able to crouch and dive back in the air to add more style to kills and stuff =D 4/5