No, that is, in Factions and Nightfall you don't. You get a total of 170 attribute points when you're level 20, but in Prophecies, you have to do a handful of quests to get the last 30 (2 quests that give 15 each) attribute points. In NF and F you get these 30 points on the starter island.
you dont receive anymore attribute points after level 20, but you will continue to receive skill points each time you "level" to buy skills with. in each campaign there are two quests that offer an extra 15 attribute points each.
