I'm trying to help my 7 yr old son. He thinks he is on level 1 in Lego City. We have spelled out Lego with the bricks. Destroyed all the buildings. We are at 906,000 but cannot figure out the rest. We have been at for hours! We have some flowers but are there more? Do they all have to explode? We have been looking for more flowers, cannot find them. Can anyone please help? Thank you so much! Details please!