Sorry forgot about this, attached my lix replay to "Let's go camping" as well. I find it somewhat more elegant than Proxima's solution. Here's a brief outline if you can't watch the replay (highlight to read):
Quote
Block the first lemming on the small brick, delay the third one by digging through the starting platform. The second one turns around at the blocker, and starts building towards the column when on the tent. The third one will have arrived by then, have one of the two bash and build twice, while the other builds up once to the left towards the blocker. Build to the exit at the left while building twice up to the block with the fire trap on top. After turning around, free the blocker using the basher. The blocker will walk up to the block you built against, turn around and walk to the exit as well.
The first time I played Haunted Botanical garden, I didn't find it that trivial actually. I built right from the landing platform towards the right, and then mined. Needless to say, when I thought I had a route to the exit, the hidden trap squished my lemmings. Building over it, which is somewhat tricky, got me to the exit, where my plans were foiled again by the next set of hidden traps. The longer route further over the top should work though.
Genesis - Sunsoft 21 - Be sure to be a builder25 lemmings
Save 100% (25)
Release rate 50
4 minutes
1 bomber, 1 blocker, 12 builders, 3 bashers, 1 miner
Good: It's certainly not trivial, you need to find a route that conserves builders to some extent. Probably harder than most of DOS Mayhem (which doesn't say much though).
Bad: I haven't found a really elegant solution to this level yet. You can still brute-force your way through the level. Design looks a bit messy.
Mod Edit: Restored attachments.