Glad you like it! "Last Lemming Standing" is slightly different in that the lemming is now a Floater rather than a Glider (due to complaints about it being a deliberate hobble in the original version) and you have Jumpers rather than Blockers, and well done for completing the Silver and Gold talismans no matter what you did, hehe! The Bronze one is the new one and just requires working out how to clear the exit without losing the main lemming or using Walkers or Jumpers for fine control.
For "Deep Freeze", saving 76 is easy enough if you find one Blocker you can undermine, and 77 if you can spare using one somewhere. 78 and over requires a lot more thought (someone once saved 79 and I managed to improve on it by saving all 80, but it is INCREDIBLY fiddly). Just a different way of arranging the talismans.
For "Mind the Gap", the silver talisman was my original intended solution, but IchoTolot found an acceptable solution that's easier to find, but uses all the Climbers, so I put in the talisman rather than patch it!