How do I pass the first wave on hard?
I was able to beat the Normal difficulty reasonably easy with a strategy similar to this:

Unfortunately, the Hard difficulty is considerably more difficult - in fact, I cannot even pass the first wave!
I looked for a walk-through to give me some pointers, and I found this. This strategy seems to work in the video, but is woefully inadequate during my attempts. I'm not sure, but I think that there may be differences in versions of the game. If it does matter, I am playing the version here.
What is a good strategy and layout to beat the first (and hopefully subsequent) waves on the Hard difficulty?
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HOW TO GET 360 WAVES FIRST WEEK
Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.
Images: Geometric Photography, lucas andreatta, Nandakumar R, Ray Bilcliff
