0.7.1 version
4.5/5 for me, I want to mention a few aspects of the game
H-content - ThornSin is amazing in this regard. If you liked smooth, flowy and jiggly animations like in another highly rated side-scroller (I'm not mentioning it so this review complies with rules) , you'll love the animations in this one. Big variety of fetishes such as flesh "dimension", mind control, pregnancy and birth, enclosed spaces full of tentacles (imagine mimic chests etc.) . A variety of enemies that have their way with you like werewolves, slugs, goblins, insects, leeches etc. While most "interactions" happen when you are downed in combat, there's also cinematics either after game over, or in certain interactions.
Combat - I'm not a big fan of combat in side-scrollers, but I had no issues with this one. Default keybinds might take a minute or two to get used to, but that's probably the hardest part. 2 weapons as of this version, both have normal attack and special attack, one of special attacks is a block and riposte type attack if that's your playstyle, otherwise there is dodge. Every enemy has unique attacks that don't take to long to get used to. You can also find items and effects that buff you (e.g. enemies that stay close to you for long enough get frozen, dodging leaves behind a thunderbolt etc.)
Progression - This is a roguelike game, which means after dying, you start all over, losing all progress you made. Game is made up of zones, which are made up of rooms. You fight room through room until you find the entrance to the next zone. Every couple of zones the theme of the zone changes (2 zones are the forest, next 3 are ... etc.), with which the enemies also change.
It's important to note you can't leave the room before you kill all the enemies in it, which is an even bigger drawback since there is no gallery as of right now. So if you want to see animations from enemies toward the end, you have some work to do.
Conclusion - even as someone who's not a fan of either side-scrollers and roguelikes, I loved this game simply for its fetish variety and beautiful animations. The biggest drawbacks right now are the lack of gallery which, seeing as the game is still in development, I hope will be added in the future, and censorship which personally didn't bother me, but no censorship is better in any case.