If the author "confirmed" then I won't need to say "I believe".

The first game barely have sex content, they're likely 90% guro, 10% sex.
This one have more sex content but it's like 80% guro, 20% sex.
The scene with the bad guys in village even hidden for no reason.
Some creatures rape her but then kill her for no reason (normally monster in hentai game rape their victim because they want re-product, even if for satisfy their lust they should keep the victim alive and use until them break).
While I agree about the first game, since from what I remember about it, it really is mainly about horryfing deaths of the protagonist, I disagree about this one.
The first I'd say is a guro game, this one is clearly a ryona one.
I am something of an artist myself, so I see the world through the prism of emotion and "sense", and to me there is a vast difference.
One is about gore, about thanatos. And the other is about dehumanizing and abusing the character. So her being killed off is there to sell the idea of her not being seen as a human, but as just an object, interchangeable with any other "person", with no purpose in the eyes of the enemies. It's about devaluing. Which is the opposite of keeping her alive for whatever reason, since it would, on the contrary, give her value.
So death is not the purpose, it's one of the elements of a bigger picture, compared to the first one.
I realize it's a little tricky to see the difference since it's more of an impressionistic one, than objective, so it's mostly about emotional effect, rather than logic. But I believe it's a pretty distinct difference, nonetheless.
Not that I truly believe that the author actually sat there and thought about this stuff so deeply. Rarely anybody does it. But you can see a lot of things if you look carefully at the final result of a creative process.