Great job! Nice platformer! I like your narrative!
I like how you design movement (slide) for theme, that's something really cool. I think idea could be develop further for some precision platformer idea. It's tough but funny to do (toy like)
SFX and music is good matching the game style.
I love how you made this small animation of sliding and your small companion.
Probably the thing i would improve is movement responsiveness. There could be more tolerance for jump press reaction so i still jump being on edge of platform. That's something you could research from internet about platformer movement.
Congratulations on your first submission! *clap*