Auto-translated
You need to approach Karfel with minimal losses from Glen (Harold can be completed with almost no losses). I completely agree that luck and guessing are key in the battle with the overpowered Karfel. The last time I fought him, it took me 2-3 hours, and I saved almost every turn and replayed it many times, which, to put it mildly, wasn't enjoyable. And yet, I still liked the map.