Hello fellow troopers!
I think an essential part of the game is leveling your heroes,
so, i wanted to share an easy way to level your chars up.

Requirements: you need to complete Kindom of the Sands at Madnes level (its relatively easy with 3 lvl 80 chars)
if you have a maxed character you are all set!

Then you just need to replay Powerslave at madnes again and again having the lvl 100 champ (or maybe 1 or 2 lvl 80 depending on the hero and its talismans) doing most of the work so the low chars get their xp.

Sands of Time is not really a problem... completing the stage often gives some sands and by the time i ran out usually i get my account lvl up so they replenish.
Having a lvl 100 or 2 lvl 80 heroes might seem a lot for new players but if you complete the story probably you have 'em.
I don't know if ppl already know of a better place to farm xp or if this post is any helpful at all, but i find it really easy to lvl all my new 4* heroes.

I hope some of you find it helpfull, thank you for the time you wasted reading about my leveling spot :P
Also, some feedback on the subject would be much appreciated!!