Quick guide to 30 points
3 points - Accounts linked.
5 points - Beat all 3 campaigns, getting Protector title in at least two of them.
6 points - 1 rare pet (which gives both that statue and the normal pet statue), M.O.X., and 7 more Heroes.
5 points - 1 Tormented, Oppressor, and Destroyer weapon. Plus two more of your choice.
3 points - 1 unique and 1 rare miniature.
5 points - 5 Prestige armor sets (one must be Elite Luxon, Elite Kurzick, Vabbian or Obsidian armor.) (Head gear not required.)
3 points - Your choice of:
Zaishen title (200 Zaishen Keys for rank 3).
15 more titles/elite missions of your choice.
10 more weapons.
28 more miniatures.
Limited campaigns
Even without all of the campaigns, it is still possible to acquire all of the item rewards (30 points), and even some of the bonus titles, but never all 50 points. Each campaign contains statues, heroes, and armor sets that are unique to that campaign.
With Prophecies 43 total points are available.
With Factions 45 total points are available.
With Nightfall 46 total points are available.
The above numbers include Eye of the North statues, heroes, and armor sets since Eye of the North is required to access the Hall of Monuments. They also include all of the "Core" points, including PvP titles and campaign independent titles, which makes the maximum shown hard to achieve with only one campaign.
[edit] Quick guide to 30 points with limited campaigns
These recommended points are possible to achieve no matter which campaign you own. Some of the points come from the Eye of the North expansion, as it is required to access the Hall of Monuments.
3 points - Accounts linked.
3 points - 1 rare and 1 unique mini.
5 points - 1 rare pet and 4 heroes.
3 points - Zaishen title (200 Zaishen Keys for rank 3).
5 points - Complete your campaign and achieve 3 additional statues from your Honor monument.
4 points - 5 prestige armor sets (headgear not required.)
7 points - 11 weapons, including at least one destroyer, oppressor and tormented.