Iris' first SP skill heals over a small area. This affect Iris and an ally, as well as all your standby characters. When one of your heroes gets too damaged, switch to Isis and continue using her heal skill. Its effect increases with more SP runes on the soul board.
Jewels
Jewels are the game's premium currency. Complete all three optional objectives in a level to earn jewels. Log in daily to earn a jewel for each consecutive day this is done. The amount of jewels received increases with each day. Complete daily, mission, and town achievements for a chance to earn jewels.
Movement
Just before an enemy attacks, it will flash bright red. When this happens, get out of the way. Swipe in a direction to roll to dodge the attack. Also do this when you know a Boss is about to attack.
Soul boards
Each hero has an corresponding soul board. You will begin in the middle and can select which branch to follow. Each branch has various upgrades. A certain number of runes is require to activate the node, which will then award a permanent stat increase to your hero.
Town
You will eventually unlock a town and have to manage it. Keep it upgraded to unlock bonuses for dungeon party. Begin by building two gold mines and upgrade them as much as possible to keep a steady supply of gold. Raise your teammates' affinities by tapping on them when they are walking around your town.
Weapons
Do not exchange weapons for new before checking if they can be upgraded. Some weapons can be upgraded into new versions. However, upgrades usually cost a large number of runes.