I'm really impressed with how much content there is here. I thought I might finish it yesterday, but no, we're still going! I've not hit any major bugs at all, just very minor things that I'm sometimes not even sure if they might be deliberate or not. Like the portraits sometimes being a slightly different size during a conversation. Maybe it's supposed to be like that, maybe not, but it doesn't really matter for me as a player.
One thing I did notice yesterday is after I installed the virus into the HQ behind enemy lines, the human and alien armies are facing each other in a cutscene all have "new character" as a label when I hover over them with the mouse. That's probably not supposed to be there? Idk.