Interesting location that you chose. Background looks cool.
Bicycle moves too slow. Could be intentional but it's annoying.
Frequency of spawning is too slow.
The game doesn't progress faster after a while which make this game tedious, especially when knife doesn't kill you but instead take 1 pineapple. This could easily be an exchange instead of the objective of avoiding knives since pineapples spawn in an equal chance as knives (I think)
Anyway keep up the effort :D