Arrow keys to move, jump and ground pound. The 3 key toggles whether or not the variables are showing on screen. This is mostly for debugging, but if you find numbers cool I've left it in for you to use. Depending on your hardware the ground pound may be a little finnicky, but if you have an actual mechanical keyboard there should be no problem.
Created thanks to Griffpatch's tutorial series, available at https://www.youtube.com/playlist?list=PLy4zsTUHwGJIATydhFeZa5pspLZR7yE__