I watched the official walkthrough from gamezhero, and I found it had some really inefficient and in some cases risky strategies. So I recorded this walkthrough, to show how I solve the levels, often much more easily and quickly than in the official walkthrough. I had to break the video up into two pieces with a break between levels 14 and 15, because my recording software wasn't behaving itself, so there's a bit of a jump in the music there, but other than that everything was done in a single playthrough.
