You blocked all the doors and windows in one level.

Ten infected zombies danced at the same time.

You played five minutes in darkness.

You built every trap and a wood blockade in one level.

You killed 20 zombies with a single bomb trap.

You employed 20 construction zombies.

You activated the Jukebox and make a zombie dance.

You searched four cacti in a row while playing Mike.

You built five blockades with super awesome finish in a row.

You killed three zombies with one melee attack.

You completed all single player levels.

You won all gold medals in all singleplayer levels.