So after finishing the game this is my conclusion.
This is a FAR superior game to the previous one, BUT it is lesser in raw hentai scenes.
I'd need to check but there's fewer varied ennemies and less scenes as a result between this and the first game. Compared to the first one it's way WAYYYY lighter on the guro death, there's quite a few area where mobs don't have "game over scene" but are all coralled into a similar area "game over" loop. On the other hand in term of raw gameplay if you discount one or two boss the game is pleasant to go through, easy to navigate, feel more responsive than the previous game and it's not a corridor anymore.
I was actually sad the game ended as I really enjoyed my time with it and wanted more of it.