Ok I'm gonna be a bit harsh but not excessively since this isn't supposed to be some big project and some problems might be due to the course idk
Right off the bat the platforming does not feel good, I'd recommend watching a few videos specifically about platformer development tricks
Also a big thing is having to replay the entire intro everytime you die, I did it once but after unfairly dying to thorns the second time around I just dropped it
Two problems that would easily be fixed with playtesting
But it seems like you're early in your game development journey so absolutely keep at it !