Some comments on your replays, Nepster:
Trial 1: It can be done a bit simpler than you did. That being said, your hard work has still paid off - you now have the record for most lemmings saved on this level! (Me and Akseli both got 47%, while DynaLem got bang on the 45% requirement.) For anyone who hasn't watched Nepster's replays, he got 49%.
Trial 2: Pretty standard solution here.
Trial 3: Rather than thinking about "how do I get up a 7-pixel wall", think "how can I avoid making a 7-pixel wall".
Challenge 1: I wouldn't call your solution glitchy, but the tricks you've described as feeling are borderline, the level can be beaten without them. One of the solutions (I'm pretty sure it was Akseli's) that I've seen demonstrates an undeniably non-glitch solution. I think you've set another record for most lemmings saved here, though I'll have to double-check what the other people have gotten.
Challenge 2: You've solved this the same way as Akseli and DynaLem, which is the same basic idea but a slightly different execution than mine. Still, it's definitely an acceptable solution and not a backroute.
Challenge 3: Pretty standard solution here.
Challenge 4: And again. I myself used direct-drop, but that's just me opting for the quicker route - your solution is equally valid.
Challenge 5: The time is quite tight as you've said (in general, that's true for most (but not all) of the Trial/Challenge levels), but it's possible to complete with a few seconds to spare.
Challenge 6: Your first solution is pretty similar to mine, though you saved FAR more lemmings - you're the record holder so far, in fact (Akseli used a completely different, and very glitchy, solution, that saved 77%. My solution saved bang on 55%). Your second solution, I think that level has a bit of terrain behind of the exit to align the trigger area better, this is what's causing the builder to stop. (In general, most LPII levels are specifically constructed to avoid the need for this, but that was one of the earlier-made ones.)
Reverse 2: Your solution is different to any I've seen so far, including my own. I don't think I'm going to bother doing much with this one - there's so many different solutions coming up for it, and it's very early in the rank, and it's still well harder than Reverse 1.
Reverse 3: Your solution here is the intended one.
Reverse 4: While the intended solution isn't *much* more complicated than this, this is definitely a backroute.
Reverse 5: Also a backroute. The intended solution to this level does not involve a fatal fall, if that helps you to try and work out what's the intended one.
Reverse 6: One of your solutions is pretty close to the correct one. I won't say which, though.
Flight 2: Your solution here is fine.
Flight 3: You solved this one virtually exactly the same way I did. It isn't the only way, though.
Flight 4: You've executed this a bit differently than I did, but the core idea is the same. The way I did it makes it a lot easier to position the bridge accurately, because it more or less falls into place automatically.
Flight 5: Nicely done. =)
Flight 6: Backroute. =(
Based on my solutions and the replays so far, I'm going to compile a list of the maximum %s. As with LPII, I'll put the names of whoever holds the record if it isn't myself. If multiple others have acheived the same result, whoever posted/sent their replay first gets their name on the list.
By the way - if you've found secret levels, feel free to also post the solutions to the secret levels themself. But, I'd appreciate if, for now at least, you kept it secret how to actually *access* them.