I liked the concept at the start where you had to sacrifice Lemmings zig zagging up to the bashable pipe, you had to be very precise here too and I had to use a little RR manipulation to get this.
It took me ages to figure out the digger bomber trick on the pipe to the lower left of the trapdoor. I must have spent nearly 2 hours on this level but it was satisfying to get and the fact that you had to time the digger towards the exit was a nice touch.
Also, the waterfall to the upper left of the level isn't placed correctly because Lemmings are able to walk by it. I did not exploit this in my solution though, it wasn't really useful in my opinion.

R2
Caffeine Addiction (Armani) - highly certain this is intended and this solution is utterly brilliant, great use of the blockers and laserers in the level. I nearly didn't solve this because I had the blocker facing the wrong way on the middle section.

It's A Wet World (kaywhyn) - solved this rather fast but I did use all of the skills, I have used this blocker trick in one of my levels before so I was immediately onto the containment trick used here. It's a great blocker trick so thumbs up from the King of Blockers!

R3
Paradox (Crane) - spent the longest on this level but the solution was fun to try and carve out. I'm almost certain this is the intended solution. Also this is the first time I have solved one of your levels so I'm feeling accomplished on getting this!
Attached both of my solves, I tried to go for the talisman on my second attempt still fell short though!

To The CPU Terminal (kaywhyn) - initially tried to go diagonally up through the middle to the right but that was too builder intensive. Then I realised there was terrain outside the green walls and then it was a very easy solve after that. Props for the good choice of 3D Lemmings music too, I love this track!