My strategy is: (1) left most kitty be the shooter with high atk and double shoot bonus. (2) 2nd left kitty be another shooter. (3) 3rd kitty be melee with %block bonus. (4) right most kitty be all-rounder melee.
FOR 1 SLICE BADGE: Level 17 - 35%: Slice WHITE to BLUE (Optimized diagonal slice - try to slice the white top part as minimum as possible - to - push blue down). Level 19 - 83%: Slice from BLUE BOTTOM LEFT to RED TOP RIGHT (Diagonal slice as maximum - will left 1 blue and 1 red box). Level 20 - 50%: Slice RED BOX from TOP-LEFT to BOTTOM RIGHT (corner to corner) both will push each other down.
(+) for others to see. Thank you.
How is the final boss looks like? I encountered a big long enemy at level 7 - near the side. Kill the boss... But NOT REWARDED the badge. Do not have the time to capture the screen :S !!!BUG!!!
Complete Hard Badge using Wizard Champion on Level 58.
Pawnage Tower: ->
Guard Tower (Ugrade Poison and 30%Atk) + 1/2 Battle Standard to increase atk-rate