Really good prototype! The prose is tight, the MC feels more believable and real in their reactions than most horror game protagonists. The atmosphere was suffocating and I felt honestly nauseous at parts - I feel like this was the intent, so well done! Loved the art style as well: the sketchy style really added to the raw and urgent energy of the scenes.
Some notes:
The grammar is usually really good, but I noticed that whenever a sentence in the dialogue trailed off, it would have two periods instead of three (eg, "please don't..") Maybe a stylistic choice? But definitely something I noticed.
I also wasn't able to use a capital letter to start my name. The text box just wouldn't accept it, nothing would appear if I tried to type using shift or caps lock. Probably a bug?
(SPOILERS FROM HERE ON OUT)
There was an issue where if I chose to fight Daniel and then became more obedient after he removed MC's limbs, the game would act as if I'd been "docile" the whole time, notably mentioning the effects of painkillers that I hadn't received.
I really liked that the protagonist fought back HARD. When you get the "bite him" option, I was not expecting to graphically rip a chunk of his mouth away! I think that's good and realistic for the situation - you wouldn't just lightly nip when you're fighting for your life.
Small art critique: in the scene with him in the truck, his hand position looks really uncomfortable/unnatural. I know hands are really hard, I'm certainly not the best at drawing them in complicated poses either. Just thought I'd mention it as something to think about changing in the final product.
Ultimately, this was really tense and well-written horror, and I can't wait to see what you come up with next!