What are all the achievements in Sonic Generations

race through the first stage 10G
clear sonic generations 50G
clear act 1 within 1 minute 10G
Get Rank S in an Act 15G
Get Rank S in 3 acts 20G
get Rank S in 7 acts 30G
get Rank S in 12 acts 40G
get rank S in all acts 50G
pull of 7 or more tricks with
a finishing combo 10G
Defeat 100 enemies 15G
Reach the goal without lossing any
rings in green hill act 1 15G
Perform all of sonic moves act 1 10G
Complete all challenge acts
feachturing sonic friends 10G
Chat with each of sonics friends
you have saved 10G
join the rankings 20G
Participate in a 30 second trial 20G
get all skills 30G
Get all collectibles 50G
play ranking attack on all stages 30G
clear half the callenge acts 30G
clear all the challenge acts 30G
restore the levels 15 G for each
collect all the chaos emeralds 20G
deafeat shadow 25 G
deafeat silver 30G
Deafeat metal sonic 20 G
deafeat perfect 25G
defeate egg dragon 25G
take no damage on the final stage 30G
Got the Red Star Ring on the highest spot 10G
got a red star using a rocket wisp 10G
cleared a regular stage as super sonic 20G
clear sky sanctaury Act 1 without losing a life 20G
wreaked 30 cars on city escape act 2 10G
Got a red star ring in a hidden room on seaside hill act 1 10G
reach the goal in Crisis city act 2 without the tornado hitting you 10G
cleared chemical plant act 2 without entering the water 10G
find a hidden spring in greenhill act 1
got a red ring located on a shorcut route in speed highway act 2
Hoped it helped
I got this Information at Xbox360 achievements.org
don't know who all posted it on there sorry :(