This deck has too little minions, 13/37 = 35%. Most Beatdown decks need at least 45% minions (preferably 50%), and usually Swarm decks need much more. All your minions save for
Troop of Uruk Hai are unique, and all are too expensive (all cost
, except Lurtz which costs
), so if you add more try with cheaper ones like
Uruk Lieutenant,
Uruk Captain,
Uruk Fighter,
Uruk Warrior...
Hunt Them Down is not so useful as you think,
Saruman Keeper of Isengard is much better to make Uruks fierce and besides protects them from wounding of any kind, including archery. So you can use 4x of him to replace both 4x
Hunt Them Down and 4x
Uruk-Hai Armory. And those 4 card slots should be used for minions IMO.
Another alternative to
Hunt Them Down is
Uruk-Hai Rampage (same twilight cost in absence of Ambitions, but remains of the board). If you use Saruman (
KoI or
SotE), another powerful and cheap minion you can add is
Uruk Ravager.
Parry is not so good,
Savagery to Match Their Numbers is a much better choice.
I know all these ideas will change your deck too much, but I saw both replays and the main problem you have is the lack of minions, and the high average cost of those you have. You need to clear some room for more minions, and that means reducing both events and conditions (Uruks rarely work well in big decks).
The biggest problem is Gandalf with Sleep Caradhras. I'm not sure how to counter that, maybe Enquea (Replacing Greed) with Too Great and Terrible?
Saruman Servant of the Eye is often enough to bring down a specific annoying companion. Works much better with a fierce Uruk, so unless that Uruk can be fierce by itself (Lurtz with another Uruk,
Uruk Warrior spotting 6 comps,
Uruk Fighter spotting 5,
Uruk Raider with a dead ally) you'll need another card to get that keyword:
Uruk-Hai Rampage,
Hunt Them Down,
Savagery to Match Their Numbers (if you face 5 comps), even
Emyn Muil at site 9 (but that's a bit late).
Savagery to Match Their Numbers and
Saruman's Ambition can provide pump support.
Servant of the Eye can easily kill self-exhausted guy like
Legolas Greenleaf,
Sam Son of Hamfast or Boromir + Horn. Give it a try!
3x
KoI and 1x
SotE is a good distribution for Saruman.
Hope this helps.