For those that can't get past 7 or 8, upgrade your stuff as much as you can by doing lvl 6. Then as you play 7 or 8, only use hobbits to hold bck the enemy. the arrow tower is your best firend. Upgrade everything all the way, and send out paladins and mages. The retalliation may wipe them out, then just save up mana and do it again.
Huge bug. On Junkyard, I was trying to make a catapult,m so when I clicked start, the red ball acted like a magnet and pulled EVERYTHING towards it. It was wierd.