I've tried a forum search but can't find what i'm after. 1. What is Spartan Heroic Hour which pops up in the chat? Is it just a PvP thing? 2. Why do I sometimes have a quest that says (for instance) 50,000 XP but then I only get 35,000 when I complete and turn in the quest? It's not to do with secondary objectives. 3. Milestones. Does this only apply when all civs are at Lvl 40? A civ can choose one milestone from any other but does that replace the milestone of that level in your civ or stack with it?