Similar to Frostgrave mechanics but more of a bend toward fighters (AKA Rangers). The henchmen can now improve with experience. The game is intended to be played as a cooperative/solo game. “Let’s Play” has a review/play through of the game and first mission. https://www.youtube.com/watch?v=gPikm35IKNM
I’ve not played Mordheim so I could not make the comparison. The YouTube link I provided has a good overview of the game for about the first 15 minutes or so. The rest of the video is a play-through of the first scenario.
Hope that helps,
"Nearly all men can stand adversity, but if you want to test a man's character, give him power."