the basic barrier can hold 12 power. Each time an enemy hits a barrier it takes off 2 power. 12/2 = 6. It cost 5 to build one. SO you are actually making 1 oil each time. Not much but then if you upgrade it, you earn more.
Agree with all the quote below, except fredrik's . The movement is crappish.. The character kind of slides. bad version of death and monstars. Nice try tho.
Badges Idea
Easy: Complete the first section
Medium" Complete three sections and get at least 20 gold metal
Hard: Complete all castle and get a metal for all.
Impossible: Get gold for all castles
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