Definitely one of the more unique level packs for SRB2, there's no denying this has a bunch of charm and effort put into it.
While my preferences for aesthetics & style do lie elsewhere, the many custom textures are brimming with style and personality, and really make the levels feel like interactive 3D versions of the author's Flash animations. Bonus points for the many animated character "textures", which are an especially neat touch, and of course the many easter eggs and references everywhere.
The skyboxes definitely have neat ideas, but feel somewhat too rectangular. For example, the island cliff face texture used in several skyboxes is often one perfectly flat wall, which could really benefit from some bumps and curves.
The levels are at their best when exploring the many nooks and crannies, finding all the neat details, aforementioned textures and even voice acting, which I've never seen done so well in SRB2 before! However, the actual gameplay didn't feel all that great to me. Most of the time, the level design felt either too small, with cramped corridors and small platforms, or too open, having many sections where there's not much to do besides running for extended periods of time. The directioning was mostly fine, even if the way forward was a little unclear in spots. There were also a few too many invisible walls for my liking, although I can understand it's a necessary evil in parts.
Still, I did enjoy going through this level pack, and thought it was pretty good!