when i fist saw the arch demon, i tried to strike him down with my sword, but this wont work!! what you have to do when you fist set your foot up on the tower is to run to the right!
up the "hill" and then to the left. there youll find the "wooden arrow thing" baliska i think the name is.. (cant remember sorry) any way, there's 4 of them located in different places arround the tower. and you can shoot at the dragon from these! don't shoose the frist one you see thow.. youll se witch one to choose.. take the one closest in range to the dragon! then just shoot!! dont stop ever! and have your players in your group close! on hold, so they can defend you! cus when the dragons life procent is down to 50.. youll need all the protection you can get.. when this happens call for reinforcement! take the dwarfs not any else if you want your allies to live. change the balliska when the dragon moves.
when the dragons life procent is down to 25.. he will try to drain your life.. just take health polution and keep alistair alive.. if your caracther dies dont worry! if you have laid with morrigan you will awake and take the final blow just in time! this is how ive donne it 2 times.. so i hope it help!
it doesnt really make a differense who you have with you, if you use this teqnice. have funn!
and im sorry for my spelling.. im really no good..
Thanks Dagger i beat him using your strategy ( note all Cred goes to you for the Strategy )now i Restarted and am working with my Elf save file
P.S i don't care if your spelling is no good it's the thought that counts