SONIC THE HEDGEHOG

The Gold Medalist achievement is, contrary to popular belief, the very hardest achievement in the game. To get this achievement, you must get:

All S Ranks in Action Stages
All S Ranks in Action Stages on Hard Mode
All S Ranks in Town Stages
All Silver Medals Found in both Action Stages and HUB Towns

Essentially, this is the "Legend of Soleanna" achievement, but you have to collect the Silver Medals as well.

For the S Ranks in ACT stages, the best advice that can be given is to defeat every enemy in sight, and collect as many rings as you can. A quick time is also important, but these almost always must be done. If you're hit and lose your rings, you may want to restart if your overall score isn't that high.

Also, if you're playing as Sonic, you can purchase the Red Gem from the many stores in the Story Mode. The Red Gem slows down the playing area just slightly, and slows down your countdown clock by a large amount, allowing you to get a nice time bonus when you finish a level.

For the Silver Medals, I recommend using ShadnicK826's videos on YouTube. He has videos for every stage and HUB town Silver Medals, and is used by most people going for a 1000/1000. A link to his first video is included in this solution.

Hope this helped. Good luck, achievement hunters. =)

Every Action stage has five gold medals, which are: The first one is earned for just completing the Normal stage, The second one is for getting an S Rank on the normal stage, The third one is for Completing the Hard stage, The fourth is four getting An S rank On Hard mode, And the final one is for getting all Silver medal locations. As for boss stages there are only two gold medals which are for Completing the stage, And Getting an S rank on the boss battle. Another thing is Town missions, You have to get an S rank as well on all of them, Depending on the character you play as, you will get achievements, For sonic you get the Soleanna's Hero Achievement For completing all town missions, And the Soleanna's Blue wind for getting An S rank on all of them. The same goes for Silver and Shadow. Also, you have to get the Silver medals on action stages (As I mentioned Previously) And HUB Towns.

I recommend using ShadnicK826 Walkthroughs To get the silver medals

My advice for getting an S Rank is Try not to die A lot, Reach the goal in a decent time, And destroy as many enemies as you can and you will be on your way, As for the bosses, you have to practice on defeating them as fast as possible to get an S, As for the town missions they can be unpredictable, But try to finish the missions as fast as possible.

I hope this helps! If you have any questions I will be happy to answer them.