To "Solitary Conifinement": My biggest problem generally with the level was that I didn't realize that using the digger first lets me manipulate where the miner tunnel goes (, which is required in both solutions). The intended solution maybe uses a bit more the gimmick of the level, that it wraps around.

To "In the cubicle": I tried the overfinicky method because I ran out of ideas. My first method seemed viable to me since I have played other lix levels that use the quirks of the cuber. Ironically I thought the upper platform was too long since it made it more difficult to perform my solution but instead it was a bit too short to prevent the solution from being doable.
I actually splatted one of my lix in one of my new attempts because I started the platformer too early.

To "Frog Fractions": Having done three different solutions I think the variability fits the level. None of the three seemed to be particularly harder or easier. It seems rather one of the easier levels and to such different solutions seem to fit.

Getting the timing for the batter in "African Wigwam" was a bit finicky for me but I don't have much experience with this game. I kind of liked the frog in the sand waiting for its prey.
I actually liked the leeway that the extra batter gives you in "At the pond".
In "Jerboa Garden" I could save the digger but this was a level where I had to puzzle around a lot to get to a working set up.
"Overhead" was quite nice for me since I could basically see what to do very early. Unfortunately I stepped in every mistake I could make.
"Diodes" felt somehow very classical.

"Frog Fractions" was a nice and not too hard of a level.
"Parrot cage" had a nice puzzle.
I tried for a long time a wrong approach in "Solitary Confinement" but actually the solution is not even that hard.
"In the cubicle" was much trial and error for me but the title hinted at least at what to do. Is there a way to assess how to do the block?
"Rock on the Block" seemed to be dependent a many different aspects if it works out well: when to start the digger, when to bat, when to use the bashers. I thought my successful attempt would fail but magically worked out. But this was generally the level that I solved last since I had no idea how to approach it for a long time.