I know, but how do you get it to work? Can I run it in an Amiga emulator?
You need:
Amiga Workbench (don't know what version, try 2.1)
Kickstart (2.05 (V37) or higher)
Lem2HD patch from AMINET
Lemmings 2 disks (get them from my site)
Basicly you load up Workbench, copy the files off of all 3 Lemmings 2 disks to your hard drive (make a directory, and add it to the list of hard drives in the emulator), extract the patch in the same directory. Then extract the level editor into a directory in the hard drive directory. Next install the editor.
I haven't had time to do this myself, but with a bit of work it should run.
Edit: Refined instructions. I'm still not sure how to install the editor, but I got L2 to work under Workbench 2.05.