Well, I just gave this a shot, and it's not bad, but there are a few things that need work. The second act of the first zone was rather cramped in places, and waiting for that moving platform to move up and down was a pain. Also, the lava in your 3rd zone was very inconsistantly deep, and in one case even had a bottomless pit hidden under it, killing me despite having the Inferno Shield. Not fair. Also, none of the water seems to be colormapped, which is a rather glaring issue.
On the positive, as a whole, it was quite enjoyable. The second zone especially was well-made, with good visuals and fun level design. I liked your texture usage a lot throughout most of the acts, and you put in a lot of scenery objects to make it look good.
This has potential, but there's still a lot of work to be done fixing the quirks.