I had a colony of five with no long range weapons and no mortars of my own when a siege arrived. I figured, this is it, may as well go out with a bang and everyone geared up for a final charge. Out they go through the main gate but by the time they arrive at the siege camp it's night and all of the raiders are deep asleep. My apparently master ninja colonists walk into camp and one at a time beat eight raiders to death with their bare hands without once waking their neighbors.
Good to know there's an alternative to long range gun battles with siegers.
Yeah, you can shoot right next to their heads, but as long as you don't hit them, the most you'll do is disturb their sleep. Throwing a few grenades around is a nice way to deal with them.
It's actually a little horrifying how effective it is to have a colonist run around pretending to be the hash slinging slasher. Jack here has a stupid killcount from this:
http://imgur.com/a/nE7Km
At least it make Brawler very useful.