Ah, I see what you mean. The I-beam might be a little difficult to see. That guy is intentionally pretty difficult to get to a hazard. He's sorta like that hard mode of that level. Even I can't reliably 100% that level half the time, because it the solution (at least the one I know of) comes down to the last second or two.
The pit is intentional, and it's also a hazard that you can dump mud into. I probably should smooth out the north face a bit so you can walk out of it that way like you can with the other sides.
Thanks again for the compliments and feedback! I'll get around to tightening some of these things up after the rating period is over. :)