Use the arrow keys to move around. It's hard to explain how to wall jump so just try it out. Tip: Hold down up key into the wall. Note: This is the first project I made like this so please don't criticize. I will make better ones in the future.
Thanks to Griiffpatch's Platformer Tutorial, I learned how to construct a platformer. The animation and most of the code are from his project. Heart and Star for a platformer game! Here is the link to Griffpatch's Tutorial. https://scratch.mit.edu/projects/67727504/