Your ambush mode doesn't work, i played it today and the aliens were adv grangers the first wave(like normal) and then they evolved into dretches the next wave, but after that, they wouldn't evolve anymore. On top of this i think they got stuck on a node because a lot of times they were just running into a wall the entire time, although the ones that did chase you kicked your butt, which i like.
Also, the !ambush_stage command doesn't work, it just says what stage it is...
and a visual error, when aliens die on ambush, they disapear instantly.