So this game is almost really good.
It plays a lot like old school Resident Evil, which if you really like those games then that's an absolute win. It tries to have a plot, and it relatively holds up in the sense that it is porn plot. The inventory management isn't awful, you can run through it hitless as if you get grabbed you dont actually take damage - it's only when you get grabbed that you take damage, and theres enough healing items that you can get through seeing the scenes once or twice.
The zombies look like zombies, so unless you're big on the ole getting plowed by monsters the sex scenes don't really give you much. I ended up just playing through the game as is, without the sex, since it actively turned me off.
The puzzles arent particularly difficult, with notes in each room all but telling you the solution (a lot of people seemed to struggle with the Constellation one...when it gives you the answer in the note, with the latter two pictures on the wall having numbers for the final section). The English could be cleared up a bit to make things a touch more transparent, but I dont think it is their first language.
The irritating thing is you cant skip the scenes if you get grabbed, so the final boss is harder than it needs to be when his grab is almost half the screen and lasts a minute long when you are on a timer. Also, brave to not have the option of instructions. I'm unsure if I missed any controls.
So yeah. The game is almost good, it's just not really all that appealing as a sex game.