This deck is cute. Way too cute.
Your FP is of the survival variety, which is fine enough, but you need to have a completely stable Shadow combo. You don't. You cannot win against
The Tale of the Great Ring -
Discovered wouldn't hurt, or you could run one
Drums in the Deep and mess with people's heads. You can't restart the combo if you lose Moria conditions to removal or
Greatest Kingdom of My People (which people play in Movie) or
Dwarven Axe. You've got one way to retrieve
Goblin Scavengers. Goblin Sneaks only help if you can deck yourself - and you've got 102 cards. Even in your game against Dauntless / Easterlings, a great matchup for you on both sides with no disruption from your opponent, you still had 14 cards left. There's no reason to be playing Sneaks when you could be playing better goblins:
Host of Moria,
Goblin Warrior,
Moria Scout. Or you could run
Host of Thousands to retrieve
Goblin Scavengers.
Plundered Armories is a "win more" card - I would much rather use my Marauders to take out opponent bows and swords - but it is fun. In this deck, so is
Goblin Swarms - you should be taking out the opponent fast. If you're going for a late combo, because you need time to set up, you don't need to search with Boatswain; you can thin the deck and just pick up boats as they come. This deck will win sometimes, when it works. A more focused deck could win in more contested circumstances.