Pit Survival

The year is 3019, when the threat of a third nuclear war rose, the population went into panic. Fear and anarchy ruled people's lives. Eventually, it was obvious that Minecraftia was doomed to destruction. In response, four underground "pits" were created deep underground and a select few of lucky survivors were sent to start small colonies in these pits and to wait until safer years. But now, these pits have caved in. It is obvious that the war has ended...

Rules:
1)Do not go above ground under any circumstances
2)Try and complete all the goals
3)Don't kill villagers (They give useful items)
4)Don't use Nether Portals to escape

Goals:
1)Build a cobblestone generator
2)Find all four pits
3)Make an Iron Golem
4)Make a manageable/renewable food source
5)Find and complete the End Portal
6)Kill the Ender Dragon
7)Make a Nether Portal and enter the Nether
8)Find the colony pit
9)Find the Christmas Pit
10)Find and loot the gingerbread house
11)Come up with more challenges!