All of the above, I gots a turtle backpack, I'm set.

I'm Batman.

Being an Aikido practitioner I have a good handling on the katana.

Really, I would choose a shield and a spear, with a knife in my pocket. When I stab them, I should shout "THIS IS SPARTAAAA"

I love sharp weapons. Guns would be my next choice (especially for sniping). As for the sharp-becoming-blunt issue, just have something to sharpen it on - a good quality sword will last long with good maintenance.

Thrown weapons suck against them, explosives are only good if you can take out a whole bunch with them and bladed weapons get their blood on you, which might get you infected depending on the kind of zombie.

Blunt weapons work better, but I would never go for those if they were the fast or smart kind of zombie. I'd rather have a good handgun and good ol' brisk walking speed.

You don't have to reload a sword

Archery. Bow and arrow.

blunt cos I'm super clumsy and would probably hurt myself with a blade and never used firearms before

Mmm definately blunt weapons like a metal filled aluminum baseball bat. bladed weapons need to be sharpened which takes to long and they can get stuck, firearms to loud expensive, and hard to get a good one, explosives im not in the army or police so yeah scratch that.