There are seven playable classes in Heroes of Hammerwatch.
Unlocking the Priest
Unlocking the Thief
The Thief is located in the [Acts#Act_2.2C_The_Prison|Prison] (Act 2) and must be released from one of the jail cells, which is opened by pressing a button hidden somewhere in the stage.
After the Thief has been freed, you must rebuild the Tavern with Ore in the Tier 2 Town Hall upgrades.
The Thief appearing in a jail cell is random, and may not appear in a playthrough.
The Thief will not appear for any players if the host of the multiplayer Game has already unlocked the Thief.
Unlocking the Wizard
Break open a cracked wall located in the [Acts#Act_3.2C_The_Armory|Armory] (Act 3) and speak to the person inside.
Once you speak to this person, purchase the Magic Shop with Ore in the Tier 3 Town Hall upgrades.
The hidden room appearing is random, and may not appear in a playthrough.
The hidden room will not appear for any players if the host of the multiplayer game has already unlocked the Wizard.