Well obviously you need to reevaluate your opinion. But yeah, they took me a while to get into actually as their albums are incredibly dense and rather subtle. The Dark Sorcery EP and Shadows of Old (which is far more death metallish but still retains the folkish melodies) are also worthwhile, just not as masterful as the first 2 albums.
I mean just listen to:
"In shimmering circles of silver light, in icy wind and spitting fire, through flowing stream and ancient mountaaaaaaaaiiiiiinnnnn aaaaahhhhhhhhhhhhhh! "
Fucking spine chilling. The keyboard touches in this song are also amazingly well executed.
And
Savage blast beat sections interwoven with glorious folkish sections. "I will hunt these weak infidels, my people's souls must be given their rest, they must be given their rest. I WILL HUUUUUNNNNTTTTT!"
Most extreme metal vocalists can only dream of being this good.