I am Bare Stuck, I can't save the people from the Goblins And Troll?

What I did with Legolas is;

A) Go all the way to the top and kill all the orcs that you see.
B) Kill all the Green orcs, but not the troll yet.
C) Once you kill aleast all the regular orcs and the Green orcs, go to the troll.
D) You will see the soilder from the beginning get killed (how sad).
E) I found that making it follow you 'round the "tents" works.
F) When you get a clear shot, shot it.

P.S.

It will take a while, but it works!

Heres what to do to beat the troll:

1. Go up to it and let him kill the rohirrim guy.
2. Make him follow you(the troll not the rohirrim guy) to the forge down near the bottom of the map.
3. Let him have a few hits at u but dodge them.
4. Quikly run roud to the other side of the forge.
5. This confuses him and makes him stay where he is or try to walk through the forge.
6. Kill Him With Arrows!!!!!!!
7. If this dosn't work just do it again until it does work.

To kill the Goblins and to free the people they are gaurding:

1. Stay at a distance where you can just see them
2. Use power arrows by holding b down
3. Run away when he comes now and shoot him with non power arrows as often as you can.
4. This should kill them with giving you minimal damage.

Right...how can you do it as aragorn though? Cheers any one who helps!