Use the arrow keys to move, press space to jump. Now, when you get to Eggman... Press C and type this exactly: Kill Eggman!! Then watch that happen! XD Currently, though, there are no obstacles in the game. Sorry about that, but I need more sprites. Plus, Eggman only appears once, and because of this, the game gets boring right after you beat Eggman. This will also be fixed once I add the rest of the game's code.
As I said in the instructions, the game's code hasn't been finished. I already have found some glitches, like Eggman appearing in the first part of the level instead of the fifth part, and when Eggman turns upside down. (Wow. So many glitches revolving around just Eggman!!! XD...) Once this is finished I will fix the glitches in the game. I haven't even added the boss battle music yet!!! Lol...