This riff is fairly easy, but sounds lige pure viking spirit!
Tremolo pick all notes, and repeat the riff. No pause. 
e|---------------------------------------------------------------------------|
B|---------------------------------------------------------------------------|
G|---------------------------------------------------------------------------|
D|---------------------------------------------------------------------------|
A|---------------------------------------------------------------------------|
E|----0----2--3--2--0--8--3--7----5--0--3--2--3--2--0------------------------|

more of this band:
http://www.myspace.com/frostmoonmusic