Some people love to play as a destroyer and some people love to defend thimgs when they playing this game. If you chose to play as a monster in the game "Man or Monster" then you need to destroy city.
On every next level the defence of the city is better and the main tip when ypu play as a monster is destroying defense. First destroy all boats, helicopters, tanks... When you destroy them, then start to destroy building and all thigs in the city.
On every level you got points for destroying and reward when you destroy all building in the city. With points you are buying attacks. Try to use as many as you can attacks, because you will need them when you go to the city where defence will be better.
For every people you kill and every tank, boat or any army you destroy you got more points.