I like your idea of traveling through the worlds/countries, dimension, time and battle with followers of different religions, I hope others will be interested. I don't know how you can put it together, but I hope you can. If you can, then put your enemies to sleep so that they are not so easy to defeat. Just a lot of weapons, but there is little difference in it, one or two blows are enough to kill the enemy. Maybe you need to make sure that the enemies were able to put a block or how to better defend, attack, shoot for example at a player from a distance? It's too easy to play, there are a lot of lives, and the enemies are very easy. I would like to have a normal difficulty in the game, but it's too easy. Many will not resort to using artifacts, etc., if enemies can already be killed with a single blow of an axe. Various items I think should help you survive when it is difficult to fight with enemies and do not want to waste your life, and for this, the enemies must be strong and cause damage. This personally my conclusions, after as played.
Now about the erotic content in the game: it is there, it is already pleasing. That you plan to add various fetishes in the future, etc. correctly, I support with all my hands. If you plan a deeper disclosure of female characters (mini-bosses and bosses) in the history of the game, their actions, weaknesses to various kinds of sexual actions/fetishes, then this will naturally have to add more dialogues with the characters to reveal various interesting facts that they will share about themselves, enemies, and which may be important in the game's plot. The text part of your game is very important, so focus on it. Especially since Korvald at any time can conduct a dialogue with Qhroth'un and in this way it is easy to convey to players interesting information necessary for the plot. And to make sex scenes look more interesting, you can add dialogues between characters at this moment, or reading the thoughts of a female character using Qhroth'un and telepathic communication. Can connect even Qhroth'un to talk to the two of us it was not boring :-) Various fetishes of domination, submission and much more with a good imagination, this way you can better convey and show, if necessary.