This book is certainly something interesting to consider. The spell list is sensible, the feats could be applied in an interesting manner. However, there are a few faults to this particular work. The grammer and spelling leaves some things to be desired, the rage powers are an odd choice, but thankfully balanced by their heavy circumstances, the special abilities are lacking indicators (like Sp, Su, Ex) and the Shadow-Guard Archetype does not have any actual specification as to what spell list they should use as opposed to the Blade Siren's list.
[4 of 5 Stars!]