Heroes
There are three hero summon tiers, Normal, Expert, and Luxury. You can summon free heroes in the Tavern. A Normal ranked hero can be obtained up to three times a day, with a ten minute cooldown between them. You can summon an Expert ranked hero once per day, and a Luxury ranked hero every two days. Additionally, if you use the free Expert and Luxury summons consecutively, you will earn a very rare hero after a certain amount of times. Collect the hero shards that eventually begin appearing during the campaign. Hero shards are fragments of a lost hero. If you can find all of them, you can recreate that hero at the Hero Store. Once you get a hero shard you can go enter Soul section of your hero list to find out where that particular hero's shards drop. You can also get hero shards by exchanging soul gems that can be awarded through the daily login bonus. Earn a three star rank by completing a level without losing any heroes. Each chapter has three bonus chests that can be unlocked after you earn enough stars. Those chests often have diamonds that can be saved to purchase rare heroes. You can also earn diamonds through the daily login bonus.
Scoring
Each chapter in Campaign mode contains a fixed number of levels. Up to three stars can be earned on each level. Do not allow any of your heroes to die to automatically earn a three star rank. If you get three stars on every level of a chapter, you will be rewarded with a bonus chest that contains rare items, including diamonds which are the game's premium currency.
Upgrades
The second hero upgrade tier is done through awakening them. This is done by spending rare materials and marks to permanently increase a hero's stats. Awaken your most used heroes as soon as you can. When a new hero is obtained, you can use experience books to upgrade them to get them to the same level as your existing heroes.
