This was pretty fun, but I do think there is room for improvement, the suggestion to include a timer or a visual display of the players score is a great idea.
A minor issue which I think is more subjective is that I thought it was kinda odd-looking was how the "trail" would lerp back to its position after the player stops moving. When the trail is fairly long it looks fine, basically snaps back to the players position as soon as they stop moving. But when the trail is short, it kinda stops for a half second and then starts moving back to position. It might look better if the trail starts moving back to position right away no matter the length IMO.
But overall I still thought it was enjoyable, oh and I did try standing still like Banya mentioned but that strat didn't work for me. On the first try I died in one second lol.
Good work!