Alright, I've read Jayde's post in detail... and I have to say thanks as always for your patient explanation. You are truly the njub whisperer. Also thanks to everyone else for their advice and patience as I had little time the past couple of days to dedicate to this.
So then I've also read up on SnS, and it does indeed seem like what I would have the sidearm defaulted to, though not the assault rifle. I would also assume that the rifle is back in the car and I've only brought the sidearm.
So, I have two actions remaining. I assume I need to get out of melee (assuming I'm in melee now) in order to remove the melee penalty on ranged weapons.
Action 1
a) Move to cover if possible and cover the escape route (assuming the stairs is the only escape route).
b) Take aim.
Action 2
Using edge to 'push the limit' on and roll 21 dice (my base 15 + 1 for taking aim + 5 for edge) and then I'll keep rolling for each of my 6s. I'm not entirely sure if this is a waste based on an 8 hit limit or not, but what the hay, let's find out!
21d6t5: 8 [21d6t5=6, 6, 5, 3, 2, 4, 4, 3, 4, 4, 6, 2, 1, 3, 5, 6, 3, 6, 3, 3, 5]
http://orokos.com/roll/3569125d6t5: 1 [5d6t5=4, 5, 1, 4, 1]
http://orokos.com/roll/356913So that would be 9. Hm, maybe not a waste.
Also, special thanks to Beta, who's followed the thread a bit and suggested this as a possible strategy. Seemed to make the most sense assuming that there would have been a melee combat disadvantage to staying where I was. And I'd rather not continue to hold people up by asking several questions about details like this, so I figure this seems reasonable enough for now.