Battleheart/Gameplay

Armory
You can see all your items from this window and equip them to your characters.

Merchant
The merchant will have various items for sale and will also pay coins for your old items.

Academy
You select the activated skills for your character.

Tavern
You can visit the tavern to hire new characters. Each character will cost 10x the character's level. For example, a level 4 character will cost 40 coins to hire.

Keep
You can only have up to 4 characters active at a time. You can have any other characters stay at the Keep.