It took me a few tries to get the hang of things and have the economy off and running in time to defend against attacks. I like the systems in place and it must have been tough to get everything working in such a short period of time! Things feel fairly balanced, I was never able to create an impenetrable defense or generate more resources than I needed. And, if I were more strategically minded, I think I could have held out much longer.
Oh, just one other thing. The chicken sound effect was playing nonstop once I built my first farm. It was a bit of a relief when the Gullivers smashed it.