I am unable to proceed through the story because I can't transform into an Abyssal Cultist and pass through the first force field.
In front of Utira Library I chose to battle Damien when provided the choice and remember having the text state that I obtained the Abyssal Cultist's Hair after defeating him.
However, there is no choice to transform into the Cultist. There are only the options for Darkai Cultist and Seed Flare.
Image link depicting issue: http://imgur.com/poUYseT