I just don't understand why anyone didn't like the undead in Thief 1. I thought they added another dimension to the game's enemies, and they were actually quite scary to boot. I mean, I could understand if they weren't someone's favorite part of the game, but I keep seeing people pointing them out as one of the things they distinctly didn't like about T1. That makes no sense to me.

At the beginning I agree with the others that didn't like them. They detracted from the whole you are a thief, not a Tomb Raider or Van Helsing. After a mission or two I realized they created an incredible atmosphere. To this day, the enemies still bothers me much more so than modern horror games.

When I first tried playing the Cragscleft mission I just couldn't go because I was too scared of the zombies :D
Took me a while to overcome my fear. But now yeah, I do like my Thief with zombies :p

Ha! Yes, I remember the first time I started prowling around the caves under the prison...only to discover the zombies! That was one of the few times any game has actually managed to surprise and scare me.

I also enjoyed thief 1 more than thief 2, after playing thief 1 thief 2 just felt like a lot of the same thing. Sure there were some new things such as potions and the vine arrows, but overall it wasn't enough to provide a fresh new experience.

How do you sneak passed the zombies?

I'm going to post this again in case someone doesn't read this far.

You don't sneak past them, you destroy them to stop their unnerving moans. :) Anyway, Thief 1 does a good job at mixing it up. Whenever you get tired of straight thieving missions in the mansions of the rich, there's a supernatural level to break the monotony. Afterwards there's another mission with humans to relax you again. In Cragscleft, when I first played this game way back, I was so happy when I finally got past the mines and into the Hammerite factory that I wanted to run up to the guards and hug them!