So funny thing i found out messing around with different items in endless mode.
i had an item setup designed to generate sparks in mass and then health and energy based on the spark generation. during the run i randomly got the "boostr pog" and thought that this would work great with the current build.
I severely underestimated just how much of a speed boost it would grant, as there was no cap to this. Then i thought this could be a cool challenge mode, and so here i am.

so here's the challenge using this mod:
Step 1: select booster pog, 1 of basically every item that generates sparks,1 of every item that shaves off cooldowns, some passive health/energy items (your choosing, though i recommend those that scale off sparks), and the time dilation item.
Step 2: start endless mod with the wraiths tool equipped.
Step 3: SURVIVE FOR AS LONG AS YOU CAN, LOL

note: at upwards of 300 m/s the camera and physics get a bit wonky, so good luck.