When other people have playtested they have found bugs and today I patched all of the bugs
here are some examples and whether they are bugs

"why can I jump when not hitting the ground yet"
this is not a bug it is coyote jumping
"why can I jump on walls"
it is wall-jumping and is going to be a feature in the next batch of levels I add :)
"why am I soo slow"
yesterday when published I had set the max speed on the rigid body to 10upf however it is now set to 20upf so you can go double the speed

I hope this resolves your issues
P.S. Im also adding a level select soon so get ready for that