ArenaNet recently released an update that offered players who have purchased all 3 campaigns and the expansion of Guild Wars to unlock "M.O.X. the Golem". I re-logged back this morning to see what the hype was about and yeah, nothing special.  It's a Dervish hero that attacks single targets and bleeds.

However, when I picked up "M.O.X. the Golem", I was given a quest as well.  This quest takes you through all games and gives a nice reward.  I recommend players who have "M.O.X. the Golem" to do this quest!