Accomplish the indicated achievement to get the corresponding number of 
Gamerscore points:

Still Broken (25 points): Save the first continent. 
Looking Better (25 points): Save the second continent. 
Still a Jigsaw Puzzle (25 points): Save the third continent. 
Picking Up the Pieces (25 points): Save the fourth continent. 
Almost There (25 points): Save the fifth continent. 
One More to Go (25 points): Save the sixth continent. 
World Savior (100 points): Complete the game. 
Partly Cloudy (30 points): Collect Sun Medals. 
Sunny (50 points): Collect all of the Sun Medals. 
Half Moon (30 points): Collect Moon Medals. 
Full Moon (50 points): Collect all of the Moon Medals. 
Blue Streak (30 points): Create an unbeatable Hedgehog. 
Power Overwhelming (30 points): Create an unbeatable Werehog. 
Getting the Hang of Things (15 points): Get a high score with Sonic the 
Hedgehog. 
Creature of the Night (15 points): Get a high score with Sonic the Werehog. 
Helping Hand (20 points): Help someone in need. 
Lay the Smackdown (10 points): Improve your Stomp. 
Wall Crawler (10 points): Improve your Wall Jump. 
Airdevil (10 points): Improve your Air Boost. 
Hyperdrive (10 points): Improve your Lightspeed Dash. 
Basher (10 points): Get your Werehog level up. 
Smasher (10 points): Get your Werehog level up some more. 
Crasher (10 points): Get your Werehog level up even higher. 
Thrasher (10 points): Get your Werehog level way up there. 
Social Butterfly (30 points): Talk to people around the world. 
Hungry Hungry Hedgehog (30 points): Eat everything in the world. 
Ace Pilot (20 points): Pull off some flawless flying. 
Day Tripper (20 points): Race through all stages. 
Hard Day’s Night (20 points): Blast through all stages. 
Get on the Exorcise Bandwagon (20 points): Drive dark spirits away. 
Gyro with Relish (10 points): Eat all the hot dogs in Apotos. 
Pig in a Blanket (10 points): Eat all the hot dogs in Spagonia. 
Exotic Toppings (10 points): Eat all the hot dogs in Mazuri. 
Sausage Fried Rice (10 points): Eat all the hot dogs in Chun-nan. 
Iced Hotdog (10 points): Eat all the hot dogs in Holoska. 
Kebab on a Bun (10 points): Eat all the hot dogs in Shamar. 
Ketchup and Mustard (10 points): Eat all the hot dogs in Empire City. 
Hard Boiled (10 points): Eat all the hot dogs in Eggmanland. 
Fried Clam Roll (10 points): Eat all the hot dogs in Adabat. 
First Time Customer (10 points): Buy something from Wentos. 
Oh, You Shouldn't Have! (10 points): Give a souvenir to the Professor. 
That's Enough, Seriously (20 points): Give every souvenir to the Professor. 
Hedgehunk (5 points): Talk with people in the pursuit of love. 
I Ain't Afraid of No Ghost (5 points): Someone is dealing with spectral 
troubles.