I find zombies chasing you for 30 mins to be pretty intense without a weapon...why not make branches on the ground that are grabable and very destructable maybe 3 swings and they are broken ? i think that would be a pretty neat way to interact with the environment ...or course ive played this game what like 30 mins and i have no clue if you can do that already or not!!. plus you wouldnt feel completly helpless and in realife you would probably do the same thing :D