The intended solution sends the normal preplaced lemming to the top right exit, while the climber simply goes back to his top left exit. For this, I platform with the glider/swimmer and he reaches over to the slanted platform in time so that the climber simply climbs back up and goes into the miner tunnel he made earlier. After bashing with the glider/swimmer to release the normal lemming, the latter lasers to the right instead, shimmies into it, builds to get high enough to jump and get over the block. I have the glider/swimmer use the underside of the platformer to shimmy so he bounces off the block and glides down to the bottom left. For the blocker floater, the other alternative is to release him with a walker after building enough of the staircase so the floater lands on it, turns around on the block back to the right, and then floats down to the bottom right. However, I didn't realize that I placed the blocker in a way that he can also be released with a laserer. Very nice catch!
I'll leave that part of your solution in, as he still needs to be turned back to the right at the bottom anyway.
Thanks for the compliment, I'm glad you liked my R1!
I really love the solution here, as I tried to sprinkle in a variety of ways for the preplaced lemmings to get to the exits: Shimmier over the water pit with the non-swimmer, build to get high enough to laserer the ceiling and then use the resulting tunnel to shimmy into it to get onto the exit platform and then platform over the water pit to reach the exit, fence to get into the water pit to get to the exit, and finally laserer the ceiling and use the resulting tunnel to jump into it to get around the traps before the exit to reach the exit. So really, I'm quite proud of my R1 if I do say so myself