Spoilers (Tips on some of the bonuses 9-12):
9. Shortcut master - (I have not unlocked this, but I am guessing that its to find all the shortcuts. So far, I only have that mentioned in 4. 5. and 7.)
10. Primary Instinct - catch and eat the bird at the end of Chapter 2 (which is at small tree on the top of the buildings). You'll need to catch it quickly, like the butterflies.
11. Black Feathers - When the crow swoops on the branches and leave a tuff of black feathers there, sometimes it drops a small black feather. It seems to occur by chance, so you'll have to keep trying until you collect all 5 feathers before completing Chapter 2.
12. First Knot - Complete the game.
Spoilers (Tips on some of the bonuses 5-8):
5. Revenge of the Dog - I got it just by bouncing on the first dog's head until it growled and nipped at me
6. XXL Meowing - at the end of the shortcut with the pipes, there's a split pipe on the left. Go to it and meeeoowwww. Get to the shortcut by climbing on the pipes starting on the left wall after bouncing on the first dog.
7. The Collector - At the area with two chimneys, there's a blue door on the left as your smoke rises. Go up to it on the smoke, and meow to get it to throw a boot out. Grab the boot and go back down to the two chimneys. Meow the chimneys in either Left-Right-R-L or R-L-L-R, grab the boot, and
ride the smoke puffs up. Beside the top ledge, on the right, a metal rod hints at the next shortcut. Go in, give the boot to the dog collector.
8. Butterfly Tamer - Get all the five butterflies in Chapter 2. You'll need to be fast and precise to get them. If you miss, you will have to retry the Chapter 2.
Spoilers (Tips on some of the bonuses 1-4):
1. Premonition - keep bouncing around during the dream before you wake up. Check the counter on the upper right for 5 purple orbs
2. Goodbye Family - Get ur family, 3 siblings and 2 parents, to give you hearts. Papa, Mama and orange bro/sis each have a quest. Wake up the bro/sis on the right of orange bro/sis (just keep meowing by the bed). Say hi-meow to the sculpting bro/sis.
3.Runaway - exit chapter 1 without getting hearts from anybody (just wake up and leave the house).
4. Little Pig - Find one of the shortcuts in chapter 2, with the white sheets. The entrance to it is in the wall on the left below the first clothes line. The shortcut will have white sheets, so just keep jumping around and leaving paw marks.
For those who have problems with enemy torpedoes, when the destroyers are after you, just dive - alot. The destroyers will then try to depth charge the last location you are at. Reposition yourself , then approach close to the surface and aim your torpedos at the red hulls.
 "Aground"){kind=icon}
 "A knots story"){kind=icon}
 "Dream Car Racing Evo"){kind=icon}
 "Kill the Plumber"){kind=icon}
 "Stealth Sniper"){kind=icon}
 "oO"){kind=icon}
 "Penguin Overlords"){kind=icon}
 "Kick The Critter"){kind=icon}
 "AdVenture Capitalist"){kind=icon}
 "a Grain of Truth"){kind=icon}
 "The Valley Rule"){kind=icon}
 "Lexicopolis: A-B-City"){kind=icon}
 "Curl Up and Fly!"){kind=icon}
 "Infectonator: Hot Chase"){kind=icon}
 "Silent Runner"){kind=icon}
Shortcut master is about knowing the shorcuts then use it for a speedrun ;) (less than 80 seconds to the top branche)