Completed it. Apart from a few niggles it was a thoroughly enjoyable title. Enjoyable enough that I'm now on level 3 of the playthrough which carries over your guns and upgrades, despite intending to start Fallout 3 the moment the credits finished rolling. I suppose I will complete the second run by playing a bit now and then. Going back to the start with all your goodies is so much fun, and I didn't use anything other than the plasma cutter so I still have most of the other guns to try out.
I found I sped through it after level 5. The unique factor on that level killed the System Shock 2 flashbacks, meaning the game no longer bothered me. It's amazing how much quicker you get about when you're not peering into the shadows and inching along.
One thing which I was disappointed in:
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