Think Outside the
Dude! You just completed the Think Outside the achievement in Duck, think outside the flock and won the Think Outside the badge and 15 points!
I got 3000+. Anyways, there is a way to do easy combos. Circle the circles with your mouse until they are a cluster and then trick them into the square. Works for me but you need to be quick.
 "Duck, think outside the flock"){kind=icon}
 "Orb - Avoidance"){kind=icon}
 "Luminara"){kind=icon}
 "Seven Deadly Sins"){kind=icon}