4D doesn't have only 3 dimensions to it, how the hell could it be "the new 4D". Go youtube a hyper-cube and you'll see clearly that this game is not in 4D.
I don't remember zombies suddenly dying after 6 seconds. I could have sworn they all lasted at least a day or two before dying of hunger or thirst... or decay.
Please refresh your browser page with game. Then continue game, the lost badges usually appear instantly.