About the size of a chunk cut up into three pieces with ore in all masses.
In two of the land masses there is a secret room with a villager inside it. The villager will trade with you if you find the emeralds.

The nether portal is already built for you, now you must find it if you want to go the nether.
The 5 chest, there may be more then 5. I forgot about that challenge and put chest of different things in different places.

Rules:
Be in survival mode
No Flying
Don't spawn in items
Wear a Nilla Waffer Top Hat (thing from nvm, it's a joke, if you know what it's from tell me)

Challenge:
Find the two secret rooms
Play on hard
Find every ore in this map (emerald ore is not in the map but emerald are in some chest)
Create a 10X10X6 house
Have you house have windows
Don't die
Find all 5 chest
Find the nether portal
Get the the third land mass
Find a cat
Find a dog
Don't jump off the map to restore health
Get a ghast tear
Don't use coal
Find diamond
Brew
Potions:
Potion of Regeneration 2
Potion of Swiftness Speed
Potions of healing 1 and 2
Potion of Poison Extended
Make all these splashes