As far as my complaints go: I wish you could hit E to clear text prompts that pop up, change the depth of field, and improve anti-aliasing so stuff isn't as blurry when turning.
But holy shit is this incredible otherwise. Absolutely fantastic job. The sound design is impeccable and it really hearkens back to the PS1 in every way, even though it takes advantage of modern improvements. Keep it up. I will buy this in a heartbeat.