Dead Space 1 has one of the best fight or flight feelings in any game, I completed the original version a few years back.
Eventually you get entrenched in fight mode which emulates that 80's movies trope of "come on! You son of a!" feeling really well.
So many areas in that game you know are going to be hell to go through via environmental storytelling, but the game keeps you going without much handholding or cheap jumpscares, though there are a few.
Great atmosphere, great survival feeling, scary without making your character passive or weak, arguably scarier than all the Resident Evil games but lacking some of those game's finesse and style, Dead Space is more hard sci fi.