Thanks for the thourough feedback. its much appreciated. Enemyies walking through the building might be a bug. They are allowed to walk behind the building as you are as a player, but it may be that navigation areas were not cleared correctly on the building base. This could have happened with 1 or 2 buildings as this was placed manually.
I totally would have loved to deliver a greater scope. It just didn't happen. Feel free to read the devlog if you are interested on the whys.
Again: Thanks for your support and feedback!