Welcome to the walkthrough for Sonic Mania, the first proper 2D Sonic game in over two decades, since Sonic the Hedgehog 4 is widely considered to be terrible. The game's story takes the classic ideas of the original games and adds a bit of fresh innovation to them, and makes several throwbacks to the old days. Although eight of the twelve Acts in the game are taken from previous titles in the series, the developers have managed to make them seem like completely new stages. The music, also a home run, makes the game that much more of an improvement on the games Classic Sonic (defined as the Sonic in 2D games after Sonic Generations) has been in.
There are 18 achievements for the game, and many of them are fairly easy to obtain. The two that people have the most trouble with involve the Blue Sphere Stages, originally from Sonic the Hedgehog 3 and Sonic & Knuckles, and passing through a late-game Act without being hit once. Even someone with absolutely zero experience in the Sonic series before playing this game can get the full set of achievements if they're determined enough, so don't worry too much about things being overly difficult.
The walkthrough has been split into a few pages that separate the achievements based on how one generally gets them. Mania Mode, the game's story mode, is fully detailed on its respective page, whereas extra features (and their respective achievements) and miscellaneous achievements are granted their own page. Videos have been provided for practically everything in the game that you'd ever have to worry about, so if watching what to do works better for you instead of reading instructions, you're in luck.
If this is your first 2D Sonic game and you find that you want to check out the rest of the original games, you can find them all on the marketplace.
Note: The Encore DLC does not relate to any achievements and is therefore only recommended for those who really enjoy the game. It adds two more playable characters, an Encore Mode (a shaken-up Mania Mode), and an improved split-screen mode.
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