There are 50 achievements worth a total of 1000 points
Race through all stages
Collect all of the Sun Medals
Collect all of the Moon Medals
Eat all the hot dogs in Shamar
Eat all the hot dogs in Empire City
Eat all the hot dogs in Holoska
Eat all the hot dogs in Adabat
Create an unbeatable Werehog
Eat all the hot dogs in Chun-nan
Blast through all stages
Eat all the hot dogs in Spagonia
Eat all the hot dogs in Eggmanland
Eat everything in the world
Eat all the hot dogs in Mazuri
Eat all the hot dogs in Apotos
Work on your combos
Create an unbeatable Hedgehog
Become the fastest thing alive
Become better friends with Chip
Give every souvenir to the Professor
Dash through the white walls at top speed
Talk with people in the pursuit of love
Drive dark spirits away
Talk to people around the world
Complete the game
Get your Werehog level way up there!
Save the sixth continent
Save the fifth continent
Get your Werehog level up even higher!
Someone is dealing with spectral troubles
Get a high score with Sonic the Werehog
Improve your Lightspeed Dash!
Collect Moon Medals
Collect Sun Medals
Buy something from Wentos
Save the fourth continent
Get your Werehog level up some more!
Help someone in need
Save the third continent
Improve your Air Boost!
Improve your Wall Jump!
Save the second continent
Improve your Stomp!
Give a souvenir to the Professor
Smash, smash, and smash some more
Get a high score with Sonic the Hedgehog
Gather Rings from all over the world
Save the first continent
Get your Werehog level up
Pull off some flawless flying