OK, so I'm 1/4 through DS1. It's exactly as I remember it. Hard mode is starting to get a little more complicated now, but so far my biggest problem has been running the wrong way on the gyroscope and getting squished.
Can't remember why I didn't finish it before. I think something else came along and it got passed by the wayside. I enjoyed it enough to pick up the sequels, anyway... Which I also haven't played yet.