This is in my humble opinion, the ultimate kit for fighting zombies, in the event that you should ever find yourself stuck in such a horror flick:
2 x Swords in scabbards across the back. A pair of wakizashi or a wakizashi and katana pairing would work perfectly, or something else along those lines. While technically caring for a katana in some form of post-apocalyptic zombie invasion would be a major drag, such a weapons cutting ability would be seriously useful. Either way a single sword is more than likely going to be overwhelmed and shorter blades are less likely to get in the way in doors. Using a chain saw is more likely to get you or a friendly killed than the zombies.
4 to 6 x Knives. 1 or 2 along side each boot for backup; plus another pair along the waist/legs for use as needed. Personally I think a Kukri or two would be handy, save the rest for emergencies or quick throws. You can never have enough knives in a zombie fight. Include some shuriken if possible (needle type are probably more relevant).
2 to 3 x Semi-automatic pistols. Capacity is more important than stopping power, as long as it handles head hunting sufficiently. Although going akimbo (bring a 4th pistol) might be useful against a zombie swarm, using your strong hand to fire until dry then swapping it to the weak, as you draw the next pistol with your strong hand is likely better. Few people can reload like Lara Croft and head shots tend to be more reliable in such dire straights, unless having a minigun would be the only thing capable of saving your bacon ;). Probably best if they all can share magazines as well as cartridges, for obvious reasons: reloading on the run and through a rare lull in targets is easier that way. Arguably the main limitation is weight. If dual wielding, make sure to use tracers so you leave a round chambered by reload time. The reason? Because if you’ve got to slap in two mags and rack two slides, you’re gonna be zombie chow.
1 x A primary weapon. An assault carbine or SMG is probably the best balance of accuracy/ammo. Shotguns are useful against swarms but limited in ammunition capacity, and the “Dream” weapon for zombie fighting doesn’t exist. Namely a double barrelled, semi-automatic shotgun fed from a bag of shells. Save the scatterguns for when there’s a well rounded group of people to fend off zombies with. Personally I would fancy an H&K MP5 or an old M2 carbine, both being much lighter all around than the CAR15/HK416 family and more than powerful enough, unless again it’s time to reach for a minigun. If not using swords, slinging an uzi or a sawed off shotgun across the back for backup, is a good idea.