every thing you need to know is in the map but i wish i knew a good mod for mobs that you can make like when a zombie spawns it spawns with a diamond block its head. but in the map you'll find a little bit of a story still working on and with a few secret items you can find

warning you may not always spawn in the right area but that only happens to me but it might happen to you but i put command blocks to get you to the right place.