Sonic the Hedgehog 4 is a platform episodic game. It was developed by Dimps and Sonic Team and published by Sega. Sonic the Hedgehog 4 Episode 1 was released for the iOS on October 7, 2010. The Wii got the game on October 11, 2010. Playstation 3 got the game on October 12, 2010 and Xbox 360 got it a day later on October 13, 2010. It was released on Windows on January 19, 2012. It was released on January 25, 2012 for Android OS.
Episode 2 was released on May 15, 2012 for Windows and Playstation 3. On May 16, 2012 it was released for Xbox 360 and Android. May 17, 2012 saw it release on iOS. Episode 3 was supposed to be released at some point, but it was cancelled. The game is a sequel to Sonic and Knuckles.
Episode 1 Achievements
- The Story Begins: Clear Splash Hill Zone, Act 1.
- Crush Dr. Eggman: Defeat a boss for the first time.
- The First Chaos Emerald: Acquire a Chaos Emerald.
- Enemy Hunter: Defeat 1,000 enemies.
- Golden Flash: Clear all Acts as Super Sonic.
- All Stages Cleared!: Defeat the final boss and view the ending.
- Contender: Upload your recorded clear times for all Time Attack stages.
- Ring Collector: Collect all the Rings in 'Special Stage 1' and clear the stage.
- Immortal: Build up 99 or more extra lives.
- Super Sonic Genesis: Acquire all seven Chaos Emeralds.
- Speed's My Game: Clear Splash Hill Zone Act 1 in less than a minute.
- Untouchable: Clear the E.G.G. Station Zone without taking any damage.
Episode 2 Achievements
- The Adventure Begins: Clear Sylvania Castle Zone, Act 1.
- Rolling Combo!: Activate the Rolling Combo with Sonic and Tails.
- Metal Sonic Falls: Defeat Metal Sonic in Sky Fortress Zone, Act 1.
- A Golden Wave: Defeat all bosses as Super Sonic.
- All Stages Cleared!: Defeat the final foe and watch the ending.
- Tag Partner: Upload a Multiplayer score or time.
- I Love Tails: Play as Tails 50 times.
- Ring Collector: Beat Special Stage 1 after collecting every Ring.
- Endurance Race: Clear all stages without returning to the World Map.
- All Chaos Emeralds Found!: Collect all seven Chaos Emeralds.
- Proof of Speed: Clear Sylvania Castle Zone, Act 1 in one minute or less.
- All Red Star Rings Found!: Defeat the final foe after collecting every Red Star Ring.
