Hi Duuddu!
I gave this pack a try and here're some comments and replays!
I had fun time reminiscing about the original lemmings while playing the pack.
It has nice aesthetic with old skool feeling.
I have some leftover skills for Easy rank levels but they seems to be open ended so I think I didn't totally backrouted them.
For Normal rank, I have a digger left on 'Normal 1 Idiots Uses The Useless Trap' so can be a backroute.
I like Normal3 One Thousand and One, it looks very simple at first glance but ended up with clean and satisfying solution.
It was not that difficult but enjoyable.
For Hard rank, I have a builder left on 'Hard1 Have a nice week!' so i guess it is a minor backroute, or something like that.
And in 'Hard2 WILLO PILLOW', I didn't use right side of the level at all, is it a backroute? or OWW and right side of the level are just red herring?
'Hard4 Godlems' is my absolute favorite level of the pack!
I highly suspect that my solution is intended.(If using two builder to fill the 2 pixels gap is intended...)
It has a little bit precise timing part but it also has very neat trick.
I hope you enjoy my replays and I didn't break many levels.