Very nice visuals, with also very good effects to follow. I like the glow to all the objects.
This game did make me realize that I should've planned out my movements more, how I should've moved slower around the map so I could be predictable. Instead I went fast and then in the future would just die because a previous me whipped across the map lol.
Movement felt a bit weird, but I think that might've just been the fault of the Web player, would sometimes move my mouse more than I meant to, or not follow 100%.
I think a game like this would really benefit from some hand made level designs. Since I assume the objects in the arena are randomly placed, you could end up getting certain arrangements that make it harder than other playthroughs.
As many of the "don't get hit by your past" games have gone, it is also a pretty reliable strategy to just sit still until everything else has moved, which I think would be the best option within this game. Although you did add a timer, but I think it may be a bit too generous with the time it gives you.
You did a good job though, one of the few games of the jam where I thought of different strategies to get higher scores. (Moving all clockwise, trying to stay to the edges, moving slowly, etc.)
Nice job!