A couple of criticisms, for ya.
The non-stop constant lightning during the thunderstorm in the beginning is so incredibly obnoxious, I found myself shielding my eyes and skipping through whatever was happening in the game until it finally stopped.
What is the appeal to earning a GIANT cock? I've never understood why some creators feel the need to give the MC a very unrealistic or disproportionate anatomy such as a male member.
This has the look and feel in all of the preview images and synopsis of a very different game than what is actually here.
The pacing of the game, from one instance to the next is quite slow, even when just skipping the text holding the skip button down, it's so slow.
From your satanic branding symbol we as the player can only guess who "HIM" is, followed by the constant mention of "sins" you can earn for power and all that.
All in all, while the game is written well, and put together superbly, with ZERO bugs OR- and even more impressively- ZERO grammatical errors. It's not my flavor or style of game. The satanic overtone, and the previously mentioned bits just ruin it for me.
Good Luck though.
P.S.
I went into it not knowing what to encounter, personally I was hoping for a proportionally small cock on the MC, and perhaps some femdom action in there with an optional touch of some naughty forced/willing-crossdress play in there. However, the art is still amazing, the cut scenes are incredibly impressive and VERY well done... You have some very serious talent. Don't let anybody discourage you from creating adult games. That being said, lose the satanic stuff if you want a broader audience.