I don't really understand people, who say, that difficulty is a bad part of the game, punishing people for not being able to press 1 key on their keyboard is pretty fair ngl.
Most of the enemies uses same attack patterns, exclude spider, 2 of them can be staggered with a basic knife to not waste ammunition, just dont spam it, time it well and you're a winner, bruh, even spider can be knifed to death, if you're persistent enough.
There's only 2 enemies, that knife isn't efficient against - Spear Girl and Facehugger.
Facehugger sucks, so your only problem is Spear Girl, which is counterable by simply dodging around her.
Dodge literally gives you I-Frame, invincibility, whatever you call it, but you should always use it, if you feel ur ass boutta get impaled.
The difficulty also gives you an atmospheric sense of the whole game's aesthetic, you're not a furry, that can tank 10 hits from enemies, you're a glass cannon, that shatters at 1-3 hits and, at least to me, it makes sense.