Difficulty in Grey Wasteland

[Zuvio]

Are you using distortion magic such as slow, stone skin, target etc? Use magic to screw the enemy over and kill him with your troops. Maybe use the giant as tank, swap out the elves for hunters, use dragon arrows on the hunter, elves, bowmen against cyclops, swap out the griffon for sprites (you do have Angy's Ruby right?) and get some inquisitors if you have no other means to resurrect. Your units will get killed, so have some means to revive them. Else you are just zerging and losing many units each fight which will drain your resources.

Originally Posted by basilios

P.S. : Oh, there's another : in Kordar I found that place (can't remember the name) that you reach by train from the mines. But I haven't found yet any quest related to it. Does that quest appear later in the game? Thanks!

Yes, you will get there at some point.