A map i have made.
Download here http://www.planetminecraft.com/project/overworld-island-survival-map/ :D

Rules:
1. Play on easy,normal or hard.
2. no jumping off the edge to heal health.
3.no using invitor editors (Too many items ect)
4.no mods.
5. no editing the map using map editors (Mcedit ect)

Challenges: (Can be done in any order)
1.craft a crafting table
2. craft a wooden pickaxe and a wooden pickaxe
3. create a coblestone generator.
4. build a house from coblestone.
5. craft a furnace.
6. use chest to get the 64 pile of coal to turn coblestone into stone and make a mob trap.
7. use dirt in chest to extend the island.
8. get a cow to spawn on the island.
9.make a iron bucket.
10.milk a cow.
11. get a chicken to spawn.
12. get a egg off a chicken.
13. collect 20 enderpearls from endermen.
14.(1.9 only) craft 5 snow golems
15. collect 10 pumkins.
16. collect 5 sugar canes.
17. collect 10 cactuses.
18. build a path to the other island.
19. make a obsidian generator.
20. get 20 obsidian from obsidian generator
21. find a silverfish (there is one in the map).
22. get 20 gunpowder from creepers.
23. get 30 string from spiders.
24. craft 10 wool
25. dye 10 wool a colour. (does not matter what colour or if there are diffent colour.)