Hard badge reminds me times when I played Olympic "joystick breaking" games on my Commodore 64... I hope my Z key was prepeared for 100.000.000 clicking mode more then my joyiticks in the past :)
LVL 12 is easy just try to get 3 hexes on the begining than defend with 2 and use 1 for expand when You get 5-6 win is matter of time and fast clicking. Just don't let to kill all Your "defending unit". Be prepeared to reproduce even if hexes=units, you will lose units all the time. Dont forget about Your 1-2 expand unit.
@itztaytay . About yellow madness its true but still with 80% and x110 at the end only 4 mln :) I see everything is random in that game so I will try till I get "mass yellow" early enough.
Your cooldowns are reduced by the amount displayed on the timer when you call waves early.