Survive on three islands, with two trees, and challenges!

Rules:
You must play on at least Normal difficulty. Nothing below that.
No going off the island.
No using mods to help you.

CHALLENGES:

1) Make a three story house with at least 35 glass pane windows.

2) Make a house out of iron blocks.

3) Make a prison.

4) Make an automatic monster trap.

5) Build a massive redstone contraption.

6) Mine at least 12 diamonds.

7) Build a Nether portal.

8) Build a Ghast killing machine using redstone in the Nether.

9) Make a TNT mine.

10(Hardest one)) Enter the Void.