Geki1 A Charitable Puppyhood Christmas Special : First level of the rank is already quite difficult but also very clever
Geki5 Miracle on Ian Avenue : One of my favourite level of the rank. I have a climber left but I think I got the main trick of the level.
Geki7 All The Right Moves! : I have many skills leftover, still I love the trick on how to release the left crowd and use builder bridge to make some long shimmiers. Also this is my favourite level of the rank
Geki9 The basement less visited : My solution to this one is very fiddly and heavily timing-based. I wonder if there's more elegant solution other than mine.
Geki10 Nativity Creativity : Dirty backroute
Geki12 Hauling cargo IN SPACE! : I'm normally not a huge fan of large button hunting levels but I must say I very much enjoyed this level
Geki13 On the Fence : I guess this one is not intended? I think you can easily block my backroute by lowering splat pad a little bit.
Geki15 Alleyway Fortress : This seems not intended too. I don't use top part of the level at all.
Oni3 Send Us An Angel : I love this level very much! The level provide somewhat limited skill set but still it's challenging enough!
Oni4 Chaotic Neutral : This is also the level I very much enjoyed
Oni7 A Year in ruin : My favourite level of the entire pack

And this one is pretty hard!
Oni8 A Christmas Carol Tea : Probably the hardest level of the pack! I would say the starting part is the hardest. I managed to solve the level quite quickly since I recently made a level using similar tricks. I was lucky
Oni9 and Oni10 : Backroutes
Oni12 Friends of Varying Talents : I love the main idea of the level

I think I backrouted the level slightly, especially the swimmer part of the level.
Hopefully, I didn't break too many levels.