I want to reset the game and start over. Does anybody knows hot to do this?

Does anyone know how to reset the game? I haven't figured out a way to do it so far.

my original steam name is the name of my twitch channel not my usual name, and anyway it got truncated so it's not even useful to have it be that. i have updated my steam name at this point, is there any way to get the change to take effect in the game? i would prefer "lisa butterfly" but if spaces aren't allowed "lisabutterfly" would be a good second alternative. sorry if i've missed something about this in the forums, i did look around a bit prior to asking....

how can i reset the game?

2228452 under name Bathunter Thank you!