I can help you figure out how to "hear" the hidden things like the cats

If you are having a hard time finding the hidden things: like cats, mushrooms and such. Then, when you are buying the extra resources, go under power ups and buy the seeker power up. It will literally light and make a sound when these things are appearing.

which is just great but it won't let you get it before chapter 4, i need it for chapter 2. so where the heck is the video walkthrough so i can see which one of the 3 cats i keep missing on chapter 2.10 since i've done it like over a dozen times and can't find the 3rd cat....aaarrrrggggg!!!!!!!!!!

The 3rd cat comes up behind the castle. Also, once you get enough points to purchase the power-up, you can go back to level 2 and use it.