Sonic the Hedgehog 4: Episode 1 [Xbox 360]

Achievements
Complete the following achievements to unlock Xbox Live Gamerscore points.
The Story Begins (5 points): Clear Splash Hill Zone, Act 1.
Crush Dr. Eggman (5 points): Defeat a boss for the first time.
The First Chaos Emerald (5 points): Acquire a Chaos Emerald.
Enemy Hunter (10 points): Defeat 1,000 enemies.
Golden Flash (10 points): Clear all Acts as Super Sonic.
All Stages Cleared! (10 points): Defeat the final boss and view the ending.
Contender (10 points): Upload your recorded scores and clear times for all stages.
Ring Collector (15 points): Collect all the Rings in 'Special Stage 1' and Clear the stage.
Immortal (25 points): Build up 99 or more extra lives.
Super Sonic Genesis (30 points): Acquire all seven Chaos Emeralds.
Speed's My Game (35 points): Clear Splash Hill Zone Act 1 in less than a minute.
Untouchable (40 points): Clear the E.G.G. Station Zone without taking any damage.

Avatar Awards
Complete the indicated task to unlock the corresponding Avatar Award.
Sonic costume (body): Collect seven Chaos Emeralds then defeat the final Boss again.
Sonic costume (head): Collect all rings during the final stage's ending.

Bonus levels and Chaos Emeralds
Complete a level with 50 rings. A giant ring will appear behind the end sign. Jump into the giant ring to advance to a bonus level. A Chaos Emerald will be at the end of all bonus levels.

Super Sonic
Collect all seven Chaos Emeralds. Then, enter any level, collect 50 rings, and you can now transform into Super Sonic.

Unlimited lives
Play the Casino Street Zone. Run through the level and activate the "slot machines" to again extra lives. When you are satisfied with the amount of lives collected, pause game play and leave the level to save those lives. Restart the level and repeat the process as many times as desired.

Always get a jackpot
Enter a "slot machine" as Super Sonic.

Alternate ending and Episode 2 preview
Collect all seven Chaos Emeralds in the Special Stages.

Alternate ending poses
Collect all the rings during the ending sequence and Sonic will show his fist pump pose from the Sonic The Hedgehog 2 and Sonic The Hedgehog 3 ending sequence, or turn into Super Sonic if you also have all the Chaos Emeralds.