Thanks a lot for the video! It helps a lot. I feel like the tutorial level gave you less freedom of the imsim variety than you were expecting perhaps, but it's something that will receive polish once other important areas of the game are finished. On the other hand it has to be somewhat restricted to teach the player important stuff but better if it isn't rigid, right.
Sorry for the bug! No idea what causes it (yet), but at least is the only one that popped up.
But hey glad you didn't get stuck, except for the infamous first tower puzzle, which I'll change. And glad you enjoyed the thing, it seemed like a good time.