UnderWorld

The Story:
You are a part of the Terrain Runner Earth Program<TREP> and you have landed on a new Flat surfaced world,Your scanners could not detect anything from this planet,as if it was cloaked from everything.Upon your enterance of the atmosphere,your shuttle began to go haywire.As you tried to land the shuttle,it began to disentergrate RIGHT before your eyes!Jumping from the ship,your find your self near a bunker,not made by Human hands though.What secrets does this world have?What or Who could have made this bunker.

Can you survive?
Besides the Challenges posted in the map,I have a few special ones that require mods,and one that requires a bow!
C1.5-Find the True Set of alien armor.(Think like an Elf,and not Santa Helper elf at that!)
C2.5-Craft diamond armor and Enchant it with Loot 3.
C3.5- Defeat the Ender Dragon with the Hidden Bow!