Ok, I've updated the map with save points.

Thanks. Let me know when you do, because that's when I'll change my vote.

You make a good point, I forgot to add any save points to this. I will see what I can do about adding those in.

Ughh, I got killed by a turret and there are no checkpoints, so I have to start ALL over again.

Sorry but I gotta give this a thumbs down just for that.

Incredibly tricky in terms of the number of puzzles to complete, but I definitely enjoyed it. It's certainly not one to attempt if you're after a quick level, but if you're interested in really using your brain and having a bit of a storyline, it's good

Beaten it probably skipping most of the puzzles.

I got into the center shaft with a portal, from there I could portal on the ceiling and from there I could portal up even more till second last floor. There's a broken elevator with a fizzler field. From the right angle you can just portal past it and you're on the top floor. From there, its just a matter of finishing the puzzle and going through the newly opened corridor that takes you to the exit.

Some intersting stuff, but just too confusing as to what your supposed to do.