Three albums, two EPs.
I'm not too familiar with the first, but I assume it was the most on the black metal side of the three. The second "Amor Fati" is more on the metal side with some really kooky riffing (think Emperor-ish, with a twist), while the third one "Lost In Reverie" out on The End is more avant-garde and mixes some ambient stuff, with some almost "poppy" stuff, and even some extreme metal. Overall the multigenre approach I found rather good, and I also liked that album as well.
The last EP (and also their last release) was rather poppy, I thought, but still alright.
I'd say download Amor Fati and Lost In Reverie first, because I can't really guarantee that you'll like them, but if you really want an opinion, I probably personally like Lost In Reverie the most.