This game has some incredible graphics and such a neat visual design to it. I real love the graffiti look to it and the animations of the characters. It's clear you know what you're doing when it comes to characters and animation. The menus were smooth and juicy and I loved the easing as they went in and out which is an extra level of polish you don't see on most jam games.
The gameplay is really great, though I have to say there's a couple small things that make the game I think a bit more tedious than fun. The main one is the way the game is designed, you have to focus on one lemming at a time and bring them through the whole path, then go back for lemming 2. On a couple runs I tried doing more than one lemming at a time and got completely destroyed. This wouldn't be so bad except you're looking at about a minute or more for a lemming to complete the run, and multiply that by the lemmings and you've got a really long and tedious level. I won't presume to have a solution for this since this is your game, but I think a couple of design choices could possibly fix this entirely. I think if all the lemmings came out at once and there was no way to stop them (like for example they would just die when they hit the walls) but you were only responsible for 1 lemming, it would make things a lot more chaotic but also a lot more fun I think, or maybe you could win more stars for the more lemmings you get in. Making it so you can only lose 2 or 3 lemmings in a level before it restarts is pretty frustrating. It leads to design where the player is forced to wait and wait to have a good winning strategy, and with only 3 days to judge all the games I had to move on after level 3.
Overall though, I think you're incredibly talented and I could easily see a game like this going up on steam or switch and picking it up for a couple dollars and having a lot of fun with it. As I said before, the game is beautiful and some of the stuff you did with the game mechanics is fantastic. Revealing the new world with the lantern is so stinking cool, and the fact that your lemmings interact in that way is incredible. So overall, fantastic game!