Kill to pass monsters outside of non-Nightmist towns.
Players get PKed outside of cities, and can't do anything about it because 1) they used their stamina up trying to kill the KTP monster, (especially players with less than 3 stamina, because these players usually don't do enough damage to quickly kill the KTP and are also pretty banged up by the time they get to it) and 2) they can't get to safety (they just have to run back and forth between squares hoping they don't die in the process)
If there's at least one other player on a kill-to-pass square, all other players can pass through freely (the KTP monster is "distracted" by the remaining player)
I've put in most (all?) the Nightmist weapons, and about 1/3 to 1/2 of the Nightmist armor in. About half of the stuff I put in has no picture, because I'm too broke to buy them all and I can't differentiate between the six bows