Here is the full list of all 12 Dead Block trophies - there are 8 bronze, 3 silver and 1 gold.
Build every trap and a wood blockade in one level.
Win all gold medals in all singleplayer levels.
While playing Mike, search four cacti in a row.
Build five blockades with super awesome finish in a row.
While playing Foxy, kill three zombies with one melee attack.
Put blockades on every door and window in one level.
Complete all singleplayer levels.
Play five minutes in darkness.
Kill twenty zombies with a single bomb trap.
Activate the Jukebox and make a zombie dance.
Make ten infected zombies dance at the same time.
Employ 20 construction zombies at the same time.