I really don't like how the endings are handled. The fact that you included a guide to all the endings in the initial release means that you knew how obtuse they are. Either way, I don't like how the TFs are handled. It feels like you tried to implement the TFs into the gameplay but the mechanics of it are rather shallow. My biggest gripe is a spoiler...
Why is there no way to win? It makes the unique stat system feel meaningless because of how easy the game is. Plus with how all the endings are handled, what was the point of the intro? It has nothing to do with the main story, and I just don't find things satisfying. It doesn't help that I wasted half an hour grinding trying to beat the end boss. It would have been neat if removing his buffs prevented his curses from working.