Come up with ways to punish the player

[nnra6864]

Game is too easy rn, we need a way to punish the player.
Some ideas:

1. Fruits that haven't been destroyed by the player should deal damage, while making combos(possibly time based) should heal the player. Ideas by @eldrejko
2. Something should directly target the player, e.g. executioners sitting on stairs and throwing objects. Idea by @nnra6864

There are probably other options too but we should have at least something.