Here's a little issue I'd like to clarify. Rules say that a heavy walker can trace LOS from any of the 4 squares it occupies. Fair enough, but look at the example below:
The red LOS from the Konigsluther's front square is clearly blocked by the wall. No attack possible. Now, the green LOS seems to work ok, except that it crosses a square occupied by the heavy walker, a square that supposedly blocks LOS.
I'm probably being silly, but better safe than sorry.