Enjoyed the playing a cat, did an attempt of this.
Viewing post in Featherless: Cake Delivery! comments
Biggest thing I found was when you get double jump ability and reload the game you can't double jump anymore.
Also if you deliver the cake to the frog first you get 10 coins, then when you give it to Pug he'll say you get 33 coins but then it shows 310 on the hud. When you pause in inventory it says 30. Collecting a single coin then puts the counter down to 40.