The Olympics: The Golden Swirl

My game is a pixel art platformer, made using python and pygame. The premise is a future version of the Olympics where countries send a single athlete, a champion, to represent their nation. The game involves navigating a dangerous arena filled with spikes and pitfalls to look for the object that will guarantee victory, the Golden Swirl. Made using several techniques I previously didn't know existed (including but not limited to transitions, tile collisions, and animation), this game is the culmination of 24 hours of hard work. You play as the Singaporean champion, eager for a win in the prestigious Olympics, and to bring unmatched glory to your country. Players can use the following controls:-
Move Right: "d" or right arrow key
Move Left: "a" or left arrow key
Jump: "w", up arrow key or spacebar.
Also, all assets are by me!

All assets are by me. This is only my second hackathon, so I would say I have very little experience...

Tile collisons, and making a satisfying looking game were the main challenges, as I have never made a game like this before.