There is no guide for this game yet. But apparently it is EASY POINTS!  

 

Play Ball - 10 points

Win your first match

 

Starting Grid - 10 points

Win with all 8 starting characters

 

Beat them All - 30 points

Beat all characters in Singles matches

 

Original Teams - 30 points

Beat all the classic Doubles pairs

 

Cameo Appearance - 20 points

Hit a SEGA court cameo

 

To The Max - 20 points

Hit 3 Max serves in a row

 

Seeing Stars - 20 points

Enter Superstar mode 10 times in a match

 

SEGA Rally - 20 points

Hit a 40 shot rally

 

Top Gun - 20 points

Hit 100 aces

 

After Burner - 20 points

Hit a serve over 100mph / 160kph

 

OutRun - 20 points

Run a total of 10 kilometers / 6 miles.

 

Step into SEGA World - 10 points

Complete your first Challenge (Rank A)

 

Classic Complete - 20 points

Complete all Challenges in one SEGA game (Rank A)

 

Challenges 101 - 30 points

Complete all Challenges in all SEGA games (Rank A)

 

To be this good takes AGES - 60 points

Complete all Challenges in all SEGA games (Rank AAA)

 

Full Roster - 30 points

Unlock all Secret Characters

 

Play the Field - 30 points

Unlock all Secret Courts

 

Score Attacker - 30 points

Unlock all Ball Games

 

Magical Sound Shower - 30 points

Unlock all Secret Music Tracks

 

Climb the Ladder - 20 points

Win the final stage in Tournament mode

 

Secret Stage - 30 points

Beat the hidden stage in Tournament mode

 

Mouse Mania! - 20 points

Rescue 500 ChuChus over time!

 

Zombie Hunter! - 20 points

Hit an 8 zombie combo!

 

Master Tagger! - 20 points

Clear a Tag without missing a shot!

 

Puyo Puyo! - 20 points

Clear a 20 Puyo combo!

 

Super Sonic - 20 points

Collect 7 Chaos Emeralds in one game!

 

Dragon Slayer! - 20 points

Destroy the Final Squilla in under 20 seconds!

 

Pot Black! - 20 points

Clear 4 Trick Shots in one game!

 

Supercop! - 20 points

Destroy Kong without being hit!

 

Party Time - 30 points

Play each type of Ball Game Multiplayer

 

Surf the Net - 10 points

Win a Match on Xbox LIVE

 

Top of the Tree - 20 points

Win a Tournament on Xbox LIVE

 

Ball Buddies - 30 points

Win 5 Xbox LIVE Doubles matches

 

Top Ranker - 20 points

Win 10 Xbox LIVE Ranked matches

 

Let's Get Friendly - 20 points

Win 10 Xbox LIVE Player matches

 

Space Channel 5 - 10 points

Watch a match on TV

 

Swinging Report Show - 30 points

Become a TV Superstar

 

Secret Achievements

 

Sonic Rival! - 20 points

"I am the world's Ultimate Life Form."

 

Rose - 20 points

"There's no hiding from her, so pink and upbeat. Such a tough cookie and so sweet."

 

Jan-Ken-Pon! - 20 points

"For seven years he lived on Mount Eternal studying the ancient art of Shellcore."

 

Nightmare - 20 points

"Only in your wildest dreams"

 

Thunderhead - 20 points

"His brother was killed by Death Adder!"

 

Piece of Cake - 20 points

"Get your coverage from Channel 42!"

 

Stuck to your blades - 20 points

"An original member of the GGs"

 

Eei-eei-Poo! - 20 points

"A stylish monkey who is adored by all the other monkeys."