I followed Siveran's advice and hit #1 on my first playthrough (lol dongse). 5 points Time is Money, 3 points Mr. Red, 2 points Heartless, 5 points Healbot, 1 point Red Ultimate, 5 more points Time is Money, 1 point Green Ultimate, then just put points in the +2 life Green and Blue skills. Once you've spent 8 points, use "Add Time" as much as you can at the end of every level. $300 in bonus - $200 for healing 2 life = profit. And it just gets better as you get higher bonus and more healing tiles.
got it. game was easy after i maxed out normal arrows and got dwarves, but the end was nasty the first time. thought it was one of those bosses you're not supposed to beat.
 "Pike Club Platinum"){kind=icon}
 "Epic war"){kind=icon}