Talk:Level-up/@comment-93.219.60.182-20140421195854/@comment-5395153-20140421213437

Out of the campaign stuff, if it's possible, try replaying any missions/skirmishes against the Swarm. They may not have Gravestones but they spam a massive amount of units and so generally level anyone up faster :). There's also a couple of missions out there which give something like 200XP. It might also be worth playing the Campaign on hard mode which will generally yield a much greater amount of XP. However, it should be noted that there are a couple of missions which are close to impossible to complete on hard mode (if you play replayable maps, you can end up playing against 5 Emperors in a free for all battle, but Emperors love picking on human players so there's pretty much no way of winning). There's also at least 4 XP tutors in the campaign - one for Knights, Fey, Dark Elves and High Elves. Out of those I believe the Dark Elven one was the most efficient in terms of Crowns to XP ratio.

If you're interested there's also the Conquest Campaign where the player has to conquer Etheria. When I had finished that my hero was around level 46. I think it's a great campaign but the ending is somewhat unsatisfying. In the unofficial patch line, buildings give 4XP instead of 3 (afaik) if that's any help.

The illegitimate and fastest way would be to just play on an XP map - that'll get you there in a couple of plays I should think.