Really like your take on the theme and good job on finishing within the time limit!
The feedback I'm about to give it 100% with the knowledge that you ran out of time, so please don't take it as criticism! The two major points that stood out to me were that:
1) Enemies and the player could leave the game space where the brown dots spawned, making the game much easier for the player
2) The player has the ability to dash with right-click, but there are no constraints on dashing. Since moving faster is objectively better in this game, the player sends up constantly dashing. I'd personally recommend looking at implementing a stamina bar, or equivalent, so that the player is only able to dash for a limited amount of time
That said, it's a fun game and I hope you had fun making it - well done!