Genuinely fun. Clever concept, and creative level design. Things start to get a bit dicey and frustrating by level 6, in my opinion. I'm sure that could be minimized with some more juice, so its ok. I wonder if the character was just too slippery. I'm not sure. I'm trying to give you some advice because I legitimately think this game is good, and would like to see it fully realized, but platformers are always so finnicky to get just right, so I cant put my finger on it. I guess the best I can suggest is lots of playtesting by different people, if you ever want to make a full version.