You can upscale the Game by running it with the -s <Scale> argument.
I don't think I have seen the character Careening horizontally before, but I did find by watching some people play after submitting that if you spam the gravity flip the collision box will start moving away from the character :( there is also a bug where sometimes you get stuck on edges. I think this is because we are adjusting how much force we are using to move based on if you are on the ground or in the air and we are using Raycast to check what we should do and when the center of the character is off the edge then it starts applying the in air force and I guess we changed it last min to where its to weak to over come the friction of the ground.
K is a left over feature that we didn't actually end up liking. It turns off gravity.
Thanks for all the feedback