Best score 16,190! The visuals and audio are pretty nice. I like the sound effect being different for each extra jump. Gameplay itself is fun.
I haven't read instructions at the start, so it took me a few rounds to realise I can jump more than once.
It often took me a second to spot the player avatar on the screen. Since the collectibles are animated, the portal did not stand out much (also since the portal did not stay visible for long). I would recommend adding some visual effect near the player at start of each round/ or keep the portal effect a little longer and more visible/standing out better in presence of all the collectibles.
Also you may want to add WAD as input along with arrow keys.
Overall a fun game and I look forward to seeing what you create next!