Welcome to the Misty Mountains, I know it's sorta cold up here but we have work to do! The Elves and Dwarves have kept you in the mountains for far too long! Rise up with the armies of Evil and enslave them all!
As you can see in this map you are Brown, right in the center of the map surrounded by mountains on most sides, so you have to defend on at least 2 sides of the mountain. This is, as you can tell not the best strategic position you could have... so you just have to make do with what you have, but at least you have Gundabad to the north and Isengard to the south, so it is not all bad.
In turns 1-15 Economy is all that really matters so you need to get the highest level mines you can get ASAP and after those hunting huts, after this try to get a better barracks in Moria because it is your best place to build military. Dain's Halls will need a better barracks so make sure you get that.
Also you need to get your general from Dains Halls to go east and build watch towers all along the southern side of that mountain to see whats going on with the Dwarves garrison Dains Hall with at least 5 skirms+2 goblin infantry+general. try to send 5-6 men from other parts in the mountains to the Mountain Fort so you can conquer Imladris which is a pain if you leave it there.
In turns 16-25 The horde goes to Imladris, take it and loot it for the Dark Lord. It doesn't matter what siege equipment you use, Imladris has no gates, walls or anything but they are in a sorta good position to shoot you so i would recommend waiting until they sally out. After this dark deed consider taking any rebel settlements around Imladris. By this time you should also consider getting Wrakyburg and Framsburg but make sure you always have a stack in Dain's Halls or it will be taken by the filthy Dwarves. also if you have less then 2000 gold coins you either need more economy buildings or less soldiers wherever you don't need them. Also prepare to defend Dain's Halls from random Dwarf army's that will randomly spawn after turn 20 and attack Dain's Halls.
In turns 26-35 It is hard to predict what the Silvan Elves and the Dwarves may do, but basically if you have less then 5000 gold you need more money buildings, farms or get rid of a few soldiers west of the Misty Mountains.
35-Rest of game You should be pretty set up economically and militarily, so go conquer the world!!!
Unit Guide
Okay these orcs are much different from their Gundabad kin, they don't have the variety of units Gundabad does but they can still with much difficulty, and skill take out Elven and Dwarven armies. Now lets cover the unit breakdown for each unit.
Snaga Skirmishers are going to be most of your army, face it they are going to be your best damage dealing units against Dwarven soldiers and probably Elven ones to because they are speedy and can outrun the Dwarves turn around throw run throw and may win. On the other hand against the elves you have to use a combo of gob infantry and skirmishers with the infantry charging and the skirmishers going around and throwing spears at the back which i'll admit works very nicely
Snaga Archers are of course pretty terrible as they have 5 missile attack and if you keep them at a distance they can shoot maybe 20 men at best per unit. Against Dwarves don't expect them to even flinch when it bounces off of their armor.
Goblin Infantry are the 2nd most reliable troops you will use and they are pretty decent at defending your flanks or helping the skirmishers kill some Elves or Dwarves.
Goblin Archers are moderately better than Snagas but don't think you are going to kill more then 25 units per unit in range. They are mostly the same story as Snaga archers, keep them safe from the melee.
Heavy Goblin Infantry look pretty beast and they are slower better than Goblin Infantry so use them to defend important parts in your army. I personally wouldn't recommend fighting Elves with these soldiers.... but you could fight the Dwarves with them and let your skirmishers get behind and throw javelins. Just remember you will never beat a decent Dwarven unit 1 on 1 with your Orcish unit.
Heavy Goblin Halberds are the only ones in your army who can kill cavalry effectively but they are so so so slow with their spear wall and regular movement which makes it a pain to keep up with the rest of your army. I wouldn't recommend fighting Elves with these guys at all..... just don't even go there... they are too slow to even be good against the archers and have no shield. You can use them against Dwarves and they are pretty effective against them.
Heavy Goblin Archers are good archers and you should protect them from melee, if they get into some don't panic too much they will not die as fast as Goblin or Snagas... They only have 1-2 more archer attack than their predecessors so don't expect them to do a ton of damage to the opposing forces, and certainly not against Dwarves... no one wants to hear their stupid laugh when the arrows bounce right off of them
Warg Riders are the only cavalry you can possibly get so save them for Elven battles so they can chase down some light archers and give you some satisfaction knowing you killed a lot of elves. Remember not to try to charge huge army's of Elves/Dwarves or you will lose your riders very quickly.
Cave Trolls... You know what this means just charge them into some Elves or Dwarves and watch the panic but if they are going to be surrounded just retreat them a little bit and if you can without hurting your trolls, charge again. You can use these guys as cavalry sometimes, but not all the time, because they are not able to charge in and out like cavalry so mostly just use these for one charge and let the rest of your army come and help.
Balrog........ I SAVED THE BEST FOR LAST He is the the best unit you will probably ever have, as he is a good general and there are around 6 of these on huge and 2 on small so... Yea you could rule Middle-Earth with the very nice cooperative Balrog, that requires Moria to be attacked after turn 90 with Mithril Mines to get. He has much better stats than any troll and can demolish anything in the game so have fun. The Balrog is pretty much the king of all units in this game so if you can survive long enough to get him expect Total Victory if you use him right
Army Setup
You should always keep at least one and ideally two trolls, 5 Skirmishers, 3 Goblin Infantry, 3 Archers,
4 Heavy Goblin Infantry, 0-2 Heavy Goblin Halberds depending on if the country you are fighting has cavalry, and your General
Just remember that all these goblins are slow besides the Goblin Infantry, Snaga Archers, and Snaga Skirmishers, so it is always a pain if you don't have trolls or Balrogs in every battle to fight the Silvan's archers who are really fast so always plan ahead in every battle you fight with them.
Now that we are all done with that.......