Tip: if you need to cross a massive pit and there's no platform, then double jump and clone yourself as many times as you can, this will rocket you forwards and allow you to cross the pit.
It took me so long to 100% this game, I got so frustrated while trying to find the final red gems, tip: Try dashing right from the highest point in the Squarian town, and then Jump while falling, this will cause you to land on a hidden ledge with the final red gems on it.
 "Super Adventure Pals"){kind=icon}
 "Sleepy Knight"){kind=icon}
 "Flash's Bounty"){kind=icon}
 "Infinity Inc"){kind=icon}
 "Kuja"){kind=icon}
 "Level Up!"){kind=icon}