I liked this game quite a bit. Althought I don't think the game is too fast. Instead, I think the controls are kind of slow to respond (input lag). I don't use Pico so I dont't have any sugessions there. Apart from that 10/10 on the concept. Also, I loved the little joke if you press any key other than x on the first screen.
P.S.: Also, its possible to turn around too fast (down then left/right) and accidentally bump into yourself. Also i think i know what the issue is, All the buttons you press in the same frame are executed at once. This is an easy fix then. All you need to do is only take the 1st button pressed that frame.