English reviews:
Yggdrasil at Chronicles of Chaos by Nikola Shahpazov - 8.5 / 10
Yggdrasil at Hyperblast Metal Zine by Loki - 9.5 / 10

German reviews:
Yggdrasil at MetalGlory by Björn Springorum - 8 / 10
Yggdrasil at Metal1.info by Justus Ledig - 9.5 / 10
Yggdrasil at Metal Inside by Memme - no grade
Yggdrasil at Metal-District by Velvet - 10 / 10
Yggdrasil at Feindesland by Michael - 14 / 15
Yggdrasil at Possessed by meden - no grade
Yggdrasil at Miodwitnir's page - no grade

French reviews:
Yggdrasil at Cryptic Madness by Frenchie - 5 / 6

Interviews:
July 02-2007: Interview by Loki of Hyperblast Metal Zine (English)