From what I remember, Reepyr polled his patrons to determine which path to develop first and they picked the Sinius corruption path. When he finished it he started a project with 3DZen so I don't know if he will ever complete the NTR route.
I don't know if this counts as a true walkthrough but I got this from Reepyr for being a long time patron. It should help unlock every scene in the game including the different endings.
Wasn't his project with 3DZen to actually animate every scene from the game?