Ah man, I went back to the start from the first checkpoint and there wasn't any secret. But there are some secrets I found.
1: When the game is loading, spam the "LET ME PLAY THE GAME" button and it will load quicker.
2: At the part with the first rainbow blocks, just narrowly dodge them and you'll fall to the bottom. Now you can just walk the easy path (Never actually done it the intended way).