You only have one objective in the game and that is to poo on your unsuspecting targets. Go through the story of Don and get the message that this game sends to you.
This game will not take a lot of your time, but it will give you a challenge at one point. The game is there to give you 10-15 min relaxation per day to achieve your personal high score or If you so wish just to poo on someone. What you need is only a little bit of feeling for the timing.