How do I lvl up heroes?

Boosting your hero’s level is essential for increasing their overall power, including attack, defense, and HP. The maximum level your hero can reach depends on their rarity: 

• 2-star heroes: up to level 40 

• 3-star heroes: up to level 60 

• 4-star heroes: up to level 110 

• 5-star heroes: up to level 150 

To increase the level of your heroes, you need to train them. Training your heroes require hero experience (scrolls) and food. Also every 10 levels you will require certain ascension materials that can be gained by battles in the campaign map and Tesla Storms.
The best way to gain hero experience and ascension materials is by redoing battles in the campaign map and in Tesla Storms.

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