I have now completed this. You can get the full version here:
http://it.travisbsd.org/lemmings/lemmingswelt/index.php?cmd=get&file=levelpacks/JIHOON.zipIn the end, I only made 80 levels, I also reduced it to only four difficulty levels instead of five. This pack does have a lot of duplicate levels, and there are two different levels that take a similar function to "We All Fall Down". Those are "Retreat!!!"(which is fairly clear that I stole the idea for from one of the Genesis levels), and "Dude, where's my exit?"(which I personally find more fun, although it's hard to say since I already know where each exit is).
Some of the levels are 100%able, some aren't, as is usual for my superpacks. Here is a list of those that aren't:
**Link removed, see bottom post as it's updated**
However, some of the ones that aren't listed as impossible to 100% are still INSANELY hard to do so on. "Build the way", "Tribute to Timfoxxy", "As Complicated As It Looks" and "Seven ways to kill a lemming" are especially hard to acheive 100% on. (The first two actually require it in their repeat versions, however - one of them with only half the skills)
Some of the levels may seem familiar. "Death In All Directions" is indeed a near-identical remake of a previous Cheapo level of mine, whereas "From Here To Anywhere" uses a terrain design based on one of them, and "The worst is still to come"/"Hell Has Frozen Over" use a near-identical terrain design although the solution is rather different.
I may or may not write a walkthrough at a later date.
You could probably try using Lemmini or the DOS version to play the levels if you want, however due to differences in mechanics, some may be impossible, harder, easier, or have backroutes. Due to the large difference in fall distance, I wouldn't reccomend trying to convert them to Cheapo.
If there's enough interest in it, I may do a cheapo remake of these. (Although some levels - specifically thinking of "Dude, where's my exit?" and "The Diving Board" here - wouldn't work in Cheapo and would have to either be removed or replaced with new levels)
