I tried to reproduce the crash in similar scene, but was not able to. I have to look into it more thoroughly. (Nice game play video by the way ;)
> Add an option to tweak music/sounds/GUI/effects volume, one by one
You can already do that in the settings dialog.
> Would feel really good to be able to go through windows, and jump over some obstacles.
- Plus other feedbacks i gave before, the more important one for me would really be the click the merc and drag to move, vs click the tile directly.
I could try to release minor update with mouse control changes. However jumping over obstacles would take a lot more development effort.