Guild wars 1
You simply need to Link Accounts from your My Account option to unlock these. By definition, you need to possess a Guild Wars account in order to link anything in the first place, the code scans the account you link and credits the relevant achievements to you.
So yes, you can.
Thank you! Your answer was very helpful and appreciated.
You need the expansion Eye of the North and at least one of the campaigns, like Prophecies. Then get to at least level 10 and reach the port city of your campaign, like LA in Prophecies, Kaineng Center or Kamadan. You can take the transfer quest to Eye of the North from any of these. Do the quest, get to the Hall.
Get tapestries so you can dedicate items to your HoM, by playing the Eye of the North main quests. They are meant for level 20s so better get a character fully equipped.
Play with your friend and look for an active Guild that can help you with filling your HoM. Do not forget to set up a decent team of heroes which you get along the time.
Getting a few points won’t be hard, but the more you want the more time you have to invest. And read through this article here:
http://wiki.guildwars.com/wiki/Hall_of_monuments_guide
Good luck and have fun!
Do note, it doesn’t take too much time. I was able to, in November of 2011, get from 3 points to 33 points in 30 days. I did, however, get lucky on Pink Day (Breast Cancer Awareness) winning multiple raffles which got me 2-3 points.