There is no guide for this game yet. But apparently it is EASY POINTS!
All Your Game Are Belong To Us - 50 points
Play all Challenge Events.
Social Flutterscotch - 50 points
Finish the game in first place with each of the 8 characters.
King Roario Award - 50 points
Win all Challenge Events and races in a single game.
Redhott Racer - 50 points
Finish every race.
Boy Band - 30 points
As a male character, finish a game while never losing to a female character.
Megaton - 30 points
Use the Fiesta Missile power-up on each of the 8 characters.
Chewnicorn Streak - 30 points
Win 8 Challenge Events in a row.
Girl Power - 30 points
As a female character, finish a game while never losing to a male character.
Professor Pester Award - 20 points
Hit every player with a power-up in a single race.
Kittyfloss Streak - 20 points
Win 5 Challenge Events in a row.
Rashberry Gluttony - 30 points
Collect more than 1,000 pieces of candy while playing as Fergy Fudgehog.
Artful Dodger - 20 points
Avoid the snowball in Snow-bowl Dodgeball.
Catch It if You Can - 20 points
Play a game with anyone who has this achievement to earn it. Then, you can “spread” it too.
Aiming Artist - 20 points
Hit the farthest target at least 3 times in 1 Launching Loathers game.
Do You Feel Lucky, Piñata? - 20 points
Win a game of Short Fuse! without the Loather ever detonating in your hands.
Eaglair Eye Award - 20 points
Find and use all the shortcuts in the races.
Get to Know Everyone - 20 points
Finish the game in any place with each of the 8 characters.
Host with the Most - 20 points
Host 3 games over Xbox LIVE.
Loaded Bases - 20 points
Hit the target 4 times in a row in Swing for the Stars.
Scenic Route - 20 points
Win a race without using any shortcuts.
Pacifist - 20 points
Win a race without using a Fiesta Missile, Colored Water Bomb, or Smoke Bomb.
Hi-yaaaa! - 20 points
Destroy 10 objects in a single race while playing as Petunia Pretztail.
Party Crasher - 20 points
Win 3 games over Xbox LIVE where you are not the host.
Practice Makes Perfect - 20 points
Play the game for 5 hours.
Int'l Piñata of Mystery - 20 points
Use each power-up at least once in a single game.
Don’t Be Left in the Dark - 20 points
Knock each of the other players out of the light in a single game of Spotlight Mania.
Sticky Feet - 20 points
Use the Buzzlegum Honey Slick power-up 10 times.
Strike! - 20 points
Get a strike in Bouncy Bowling.
Stuffed! - 20 points
Get more than 99 candies in any single Challenge Event.
Tricky Treats - 20 points
Destroy at least 25 pumpkins in a single game of Messy Mayhem.
Rainbow of Piñatas - 20 points
Play each of the 8 characters in 1 of their alternate colors.
Game Guru - 15 points
Win the game.
Coulda Been a Contender - 15 points
Win 1 race.
Quick Like a Bunnycomb - 15 points
Hit 3 speed strips in a single race.
Whirlm Streak - 15 points
Win 3 Challenge Events in a row.
No Wipeouts - 15 points
Never fall down in a single race while playing as Franklin Fizzlybear.
Classic Gamer Reward - 10 points
Enter the classic gamers code while on the START screen. For a hint, go right into your manual…
Bear Hug - 10 points
Never use a power-up on Franklin Fizzlybear while playing as Florence Fizzlybear.
Flutterscotch Quickness - 10 points
Use the Flutterscotch Wings power-up to overtake an opponent.
Share and Share Alike - 10 points
Play a game with someone who hasn’t unlocked a Challenge Event you have unlocked.
Mama's Boy - 10 points
Lose to Fergy Fudgehog while playing as Francine Fudgehog.
Making Friends - 10 points
Play a game over Xbox LIVE, or invite someone to an online game.
Popularity Contest - 10 points
Complete a game with all 4 characters playing as Hudson Horstachio.
Gassy Gusts! - 10 points
Get your ship all the way to the finish line in Burps Ahoy!
Scene Stealer - 10 points
Beat Hudson Horstachio while playing as Hailey Horstachio.
Seeing Double - 10 points
Finish a game while playing as the same Piñata as at least 1 other opponent.
Squished! - 10 points
Jump and ground pound each of the other players at least once in Raisant Stomp.
Keep Your Friends Close - 10 points
Complete a multiplayer game offline.
Think Fast! - 5 points
Never get hit in an entire contest by a Fiesta Missile while playing as Paulie Pretztail.
So Awesome! - 10 points
You, the master of unlocking.