If you want the fully-immersive feeling of being hunted by zombies, then you will need to book the "Survival" experience. It is a 3 hour long event in which you are part of a clean up crew, hired to dispose of the medical waste from a scientific experiment which has gone horribly wrong...
You will be lead around by your very own security personnel, who will guide you through your missions - do as they say, and you might make it out alive.
Weapons, your first magazines of ammo, overalls and personal protective equipment are all included in the price.
If you are a regular Airsoft player and want the challenge of playing 2 hours of Zombie Survival style of games, you'll need to book the "Zombie Apocalypse" experience.
You get the same missions as the "Survival" experience, but instead will focus on the gameplay element of surviving a zombie outbreak.
You must provide all of your own weapons, ammo and PPE but there will be opportunity to purchase additional ammo and rent weapons on the night.