I do wish you'd be a little more specific about which obstacles you weren't much of a fan of.
It's the general use of the more random enemies that spit projectiles and the fact that often the obstacle is just overcoming single enemies at a time in a normal boring way. In a few areas I felt I died because of the randomness. Certainly some people have a higher tolerance than I to it.
Not to say that every obstacle wasn't of my taste, I especially liked the
lasers in the ice area where you need to jump on their emitters to climb up, which made a simple obstacle seem threatening. I also liked a room in the forest where you had to taunt out the projectile from a ceiling spitter in between two trees, which was challenging to get right.
I saw a lot of potential in this level, and it certainly hooked me in for at least completing it, but I probably wouldn't have commented on the obstacles if there weren't some that I thought were really good. I can't say much negative on the other aspects of the level, as there were enough save points, looked and sounded great, and the story was interesting. I suppose maybe the text boxes that use one too many lines looked awkward but that's it.