Your mission is not to give the bugs eat the apple. You have 6 super weapons that you can use anytime, and also you have the opportunity to pick up the occasional bonuses.
Another kind of bugs is added in every new level and they all have their particular qualities.
In the bonus level, try to smash as many cockroaches as you can. You need to knock on the perimeter boards to make cockroaches appear. They hide under it.
Stools can be moved because cockroaches also can hide there.
Help the poor apple survive this invasion!