How do I make enemies and health?

I'm making a zombie survival game, and I can't figure out how to make enemies. I want to have a spawner that spawns a zombie every 15 seconds, and I want the zombies to go towards the player until it either dies or kills the player. Also I need help with health. Please make it a javascript or C#.


Spend 5 good minutes searching Google and you should find everything you need. Some keywords to keep in mind ("unity", "spawn", "health").

I find your lack of adequate searching disturbing.

@Flavi: I am forever in your debt for that link (! I love it!