Nice little level. Aside from some technical matters, I think the design was fairly good. Uneven walls, where you have to jump while climbing to make it to the top, are annoying. In the future, if you make a serious level, I suggest having it beta tested, preferably by people from this forum since many of us are well versed at KS.
@ Everyone: Although this may have been made with KS+, it doesn't use any KS+ features. It is a normal KS level.
@ Ultigonio: I think it was Holopunk's intention for you to feel like you're falling into Limbo at the beginning. At least that's what I took away from it.