Aye, that's one of the reasons I love the first two Thief games: even on the lowest difficulties, Garrett can only take a scant few hits before he's down for good. Its a drastic, though very enjoyable, change from the norm.
Also, replaying Katawa Shoujo and...I'd almost forgotten what an emotional gut-punch Hanako's route is, even with the good ending. Doesn't help that her...ahem, scene is one of only two in the entire game where the standard, lighter music isn't played, effectively underscoring the whole "what is happening is not a good thing" vibe its got going.