To @_The-Programmer_: I added a basic player sprite - you may want to change it? - and jumping and gravity. Just as a note, if you want, you can change the gravity of the world by going to the 'Player' sprite and changing the values. I just put in what I thought was appropriate. You also said you had charactor animations? Feel free to plug those in :)
----------------------------> Update Log: <----------------------- ➡ @_The-Programmer_ : Scrolling level/background, wind effect: https://scratch.mit.edu/projects/912111319 ➡(r2) @-CoolishGames-: Added basic player sprite, jumping, WASD support, and one extra scrolling costume: https://scratch.mit.edu/projects/915248302/