This thread hasn't been updated for a long while (10 years?!
), but like I said on another thread, it's nice to go back onto your old challenges, especially when an update (albeit quite an old one too) adds a feature which will help you but happens not to change the DOS mechanics. This challenge happens to be one of the blessings thanks to Lemmix's addition of frame control (Which wasn't added before until NeoLemmix implemented this feature). This really eases the solution's execution and because of that, it deserves a revival.
I made quite a few improvements, mostly for maximum %. I've bolded each of them. Most of the replays attached in a bundle will work with the old Lemmix Players currently on the NeoLemmix Website, and hopefully the new one too. I also decided to include Hail 5's 91RR result as it is fiddly to execute. The only one I'm stuck on is Mayhem 10's 97% challenge, though I improved on the 66% requirement significantly here as well. Frost 14 7RR is similar to the 90% solution I've pulled off yesterday.
Taxing 23: 91
(89 for 100%)Taxing 28: 63
(3 for 87%)Mayhem 10:
89Wicked 15:
77 (5 for 96%)Havoc 12:
69Frost 14: 53
(7 for 90%)My favourite level has to be Havoc 12, despite the fact there's only builders available. It's also the level with the best improvement, up from RR17. Hints below.
The key is who and when to build, either on the platform to delay the lemming or on the edge to close the gap quickly. The former is risky, particularly for the top entrance, as I did cause a few splats as well whilst building there. I also had to make key RR changes while staying above the limit. The higher the RR, the quicker the gaps will close at the expense of more builders used.