When you get to "Firewall Override" some of the upgrades have chances of killing of the humans. Right now it's really under powered and so nothing much happens. There was a loss phase planned but we did not get the time to implement it. I do agree some upgrades are very counter productive, I'm not sure if we will continue to work on this other then small bug fix patches. really depends on how many of you guys actually want a completed game! We did have ideas for a story line which unlocked new male/female characters but 3 days was simply not enough time to make something of this nature.
Thanks for the feedback!