Currently I have found the goblin campaign pointless to attack. I reckon a cool feature to have in this campaign is to have a Goblin King in the last base, who when defeated is unlocked for later purchase.
The Goblin King would prioritize protecting and attacking the resource storages. The Goblin would be weaker than all the other heroes but does more melee damage. I am unsure of the Goblin's special power. Help me out guys!

