A shotgun, a katana, a Glock 17 and a Five seveN. Why?
Because-
1. Shotguns basically spread death all over, and the closer it is, the less spread thus higher chance of blasting their brains out. The spread may also be useful for lucky hits on other zombies as well.
2. The katana is sharp and powerful. If used with skill, it can easily slice through several zombies at once. Although I like sabers and the kilij more, katana have better reach and is lighter.
3. The FN Five seveN is a handgun that uses the same ammunition as a P90, thus it has a powerful piercing power, which means that you can take out several zombies at once if lined up. It also has a huge ammo capability for a handgun, which holds up to 20 rounds per magazine.
4. The Glock 17 has a fair stopping power, low recoil and very good accuracy. It can also fire in either single shot or burst-mode (3 rounds per shot), which allows you to adjust to the force required.
I picked 2 handguns because the Five SeveN could be a double-edged sword- while it can be useful for taking out zombies, the piercing power could also make it hit your friends and allies.