The Lord of the Rings War in the North

Edit: The achievement title spoils a story moment, as is often the case with secret achievements, so don't read on if you don't want any spoilers at all. Just know that this achievement will unlock in the course of the story.

You may want to copy your save to another slot before attempting this level, as it autosaves at an important moment that could make subsequent tries more difficult.

Piece of cake, ladies and gentlemen.

This is the "secret" achievement for helping defend the dwarven city of Nordinbad from orcs, trolls, and explodey orcs.

In this chapter you and your party will remain within the opening to the front hall of Nordinbad to fend off the oncoming onslaught of servants to the dark lord. It begins simple enough: kill dudes, and kill them all.

Eventually siege engines will butt up to the wall and you have to do the following: kill more dudes.

After that, and this is where it gets tricky, you have to kill dudes, but also make sure the minimum amount of them get through your defenses and up to the front door to Nordinbad.

The doorway will have a health meter, as it were, so you will know if you are doing it right.

The first wave is a round of many many orcs with explosives strapped to their backs. The bad news is: they can really damage that door; the good news is: they blow up when you shoot them. So find a good spot to stand (for me it was between the two stair ways- so I could look down as they came toward me but if any got passed I could turn around) and pick them off as they come. Chances are if you hit one in a group the entire group will goo POOF.

The next waves feature some of your least favorite house guests for a hobbit, armor laden big ass trolls. These guys are tough, but as long as you get in close and pay attention to the big club they swing around (and roll accordingly) you will be fine. Just be sure to get in close as often as you can to keep them distracted! If they reach that door you may want to work fast- cuz they be swangin!

Finish off that mutha-f-ing captain that comes by and you'll be getting back rubs from the dwarven folk in no time. Seriously, they love you.

That's about it, stop those jerks from getting to the door.