Coreheim is an updated rulebook for the venerable Games Workshop Mordheim system. I liked Mordheim (and its predecessor, Necromunda). I should get them out again to play.
mordheim
Border Town Burning Mordheim Supplement
Border Town Burning is a free, unofficial supplement to the excellent, but abandoned, Mordheim, from Games Workshop. It’s got new rules, a new setting and lots of scenarios in a very professionally done format.