Apparently I can't hear anything and I can't scroll the slider for music and sfx so ¯\_(ツ)_/¯, the visuals and effects like the enemy exploding was awesome but when the player gets hit, AHHH MY EYES, like seriously I can't see shit when I get hit XD, not sure how this is connected to less is more but it was fun :D
suggestion:
1) I prefer to have a larger space where I can roam so why not increase camera view and space :D
2) the enemies are a bit too predictable so could you make the spawn location random and a heads up before spawning so we don't get "sneak attack"
3) the pop ups like speed has been decrease or the floor is slippery, please make last longer cause I can barely read them
4) tutorial?(very common but necessary)
5) more content like a SQUARE that is essentially a tank or a CIRCLE that is fast cause it's a aerodynamic XD how about new weapons like a minigun that fires TRIANGLE or a grenade that shoots out HEXAGON that explode
6) might want to add trails on your bullet(just preference)
like the way the enemies move since most of the time you would expect them to B line towards you but there is fiction and also the fact that they "slow down" so that's a nice change of pace either way congrats on your first game jam(you sure as hell did better than mine) :D