I like that the maze and helium drops are randomly generated per attempt, and the music was done well.
The dash mechanic was extremely useful for getting around in the 20 seconds - once I got an idea on size of the maze and that the helium wasn't tied to the dash, I started using it liberally.
I think a potential improvement would be to include a restart button - As general movement is tied to helium, a run can end prematurely when you run out and are stuck in a dead end. Being forced to wait out the timer is somewhat frustrating - in several attempts, I lost the coin toss and picked a dead-end with no helium left, and was forced to twiddle my thumbs.
I eventually got to the end and got my slushie though.
A floaty, mad dash of a game.