before you start the battle you should get a full 100% refund of buildings. It is annoying when you misplace something and have to restart to get your money back.
my last person to scare was a little girl, she was on the ground floor. And when I scared her with the clawing stuffed bear, she almost ran out of the door, before she got scared by the cat (she actually screamed when she saw it) and ran back to the bear...
On the final level, choose a chopper and try just fly back and forth above the "fort". All the bazooka guys will shoot at you, but they cant reach you and they will all destroy each other =P. Got 29x combo :)
hmmmm, if you go to the moon the enemy cant send tanks or choppers because they cant burn their fuel without oxygen.... and still you can use your flamethrower?
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 "Kingdom Rush"){kind=icon}
 "Zombotron"){kind=icon}
 "Haunt the House"){kind=icon}
 "Amorphous+"){kind=icon}
 "City Siege"){kind=icon}
 "Mastermind: World Conquerer"){kind=icon}
 "Road of the Dead"){kind=icon}
 "Bridge Tactics"){kind=icon}