I highly recommend to beat the first game completely, even with the secret or the story wont make a lot of sense (not that it does to begin with). Anyways the controls *arrow keys* thats it, dont touch the black, yellow is shrink, orange is grow, have fun and do it again :)
*do not press the flag in game unless told to or if you need to start it, if you do click it 2-3 (unless starting or told to) thanks to AntiGames for the jump/gravity code, if i did not have it i most likely would not have this. (link to them and the game i used. AntiGames: https://scratch.mit.edu/users/AntiGames/ the game: https://scratch.mit.edu/projects/11352408/