Easy money, experience and items (You'll need either the Fire Blast or Holy Light mace.):
♦Start a boss fight (I used the first one until level 45) and start summoning turtles.
♦ Work on destroying the gate while summoning more turtles.
♦ Once the boss comes out, stand just behind the turtles and let the mobs pile up. Use the Holy Light mace to kill them and repeat.
Experience rings help a whole lot as does upgrading your turtles and mace powers.
To those who complete the game and can't get the badge. If you finished the level with the walkthrough open in another tab/window close it out then do the level again. It should register.
For Sirk who somehow managed to get 33 + votes...
See that objective that says to not let the two tanks touch? Yeah... Should probably not let them touch cause yep, you guessed it, the you lose. Who woulda thought :(
 "Farm of Souls"){kind=icon}
 "Paladog"){kind=icon}
 "Vampire Physics"){kind=icon}
 "Momentum Missile Mayhem 2"){kind=icon}