I'm happy to release my first level pack in almost 2 years. The pack contains 5 ranks, with 41 levels in each rank, so 205 levels in total. The ranks are: Fun, Tricky, Taxing, Mayhem, and finally, Madness. This is, as far as I'm aware the 3rd or 4th largest pack on the Lemmings Forums (with Revenge of the Lemmings and Lemmings United being 2nd and 3rd). The difficulty of this pack is very difficult (bordering on brutal) towards the end. Even the first rank starts off notably difficult.
If you finish this level pack/rank or if you are stuck on any levels, please let me know.