Thanks, guys. The three games we did yesterday were the first ones where we put the "event" icon into play - and it was far more interesting. In this game you're drawing cards to see how many models your activate, etc. - but if there is an event icon on the card you resolve that first. A simple table lets you do all manner of nonsense, and in these games the sentry guns would automatically engage or sump creatures would show up.
Added a lot of third-party danger to a game where were already fighting each other. Using terminals on the table you could also try to hack and control the guns and use them on your opponent, etc.
When NPC's are on the table...they're free game to either player. So the sump creatures become valuable assets. You end up wasting activations trying to keep NPC's away from your guys - and use them to attack your opponent, while they're doing the same.
Overall, excellent games and very hectic, violent, silly and full of mayhem.