For me the only issue in Grymforge was that one of the gnomes would, after blowing up the rocks, run through the fire to get free and then everyone would turn hostile. But I like the area layout in that fight, different places you can approach it from, including the platforms. Golem fight was ok, my first party was an arcane group, so the only characters armed with blunt weapons were my sorc and Gale.
Had to lure the thing on the anvil instead.
edit: And of course I forgot my favourite encounter: the mimics.
