There aren't any real "tricks" to leveling your Angels. You'll need to use Training Slots for them and probably will want to use EXP Potions to boost them more quickly. Everything discussed on the Train page applies to Angels as well as Heroes. However, you can still get a small amount of XP from PvP fights if the enemy is around your levels (e.g. +180 EXP).

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.