Loved the game, and it was very fun to play. Here are some things that I've noticed, and i hope it helps:
I've noticed that you had the controls on the site but unless i did miss something in-game, there's no tips about that there. I'd consider always having either a text or a image for player reference.
For the pickups, sometimes it's hard to line up for them, and i think it was at level one that there are three so close to eachother that i don't think you can get them all one after the other? Maybe you could adjust the speed, or the yellow pickups spacing so that if you do it right you can get them all. In example, having to pick between in example a shield or health pickup is a good example of a use case for this, but for a currency or score pickup, if they are too close and you are forced to only pick part of it, it can feel sort of punishing to the player. I can definitely see that you intended for them to be picked all up, as they formed sort of a snake shape, but the speed (or spacing between them) was a bit too much.
One last thing, If there is please call me out because i didn't see it: a "quit game" button, so i had to alt-f4.
By the way, when you compile a game with Unity, the game's folder will have a GameName_Data folder and a GameName_BurstDebugInformation, this last one you can delete it, or open the zipped folder and remove it in there.
Having said that, it is a very fun game, great job! The loop effect was really nice and the controls felt smooth.
Cheers ;)