Well I made this one on VH on the third try. I was hoping to make it on the first even though I didn't know what I was facing, but I was ill prepared for the final battle. On the 2nd try I possibly was a little better prepared, but they started to pour in on me so I decided to really tighten down on the third try. And here I made it smoothly even though the AI did their best attacking job hitting me only on one side.
I went strictly archers and on the final attempt I was able to get close to 600 for a 50% increase over the previous two. I also went for pitch, but it didn't come into play this time. I did pit every spot outside my wall and inside by gatehouses. I also went for the full good things bonus this time to help give an extra punch. They did punch through the outer wall, but were too weakened to do much else.
I though about deleting much of the castle, and closing in gatehouses for defense. By my 3rd attempt I only deleted areas that were not necessary for defense and using extra gatehouses as support platforms. Don't be afraid to keep at low gold for much of the game. Buy as much wood as possible to get your economy going quickly. Once your production is going the high tax + high pop will put you over the top. Even giving money for plenty of pit wood.
Also if you want to use up extra workers to meet pop it doesn't hurt to have bakers and brewers+inns. They keep your limited stockpile empty and if they over do it they just rest.
That is it. This was a fun map for me. Usually when I have to replay I find it tedious. Here it was funner each time.

