A multiplayer fantasy game featuring idle rpg elements is Firestone: Online Idle RPG. To defeat terrifying bosses, gather heroes, enhance their weapons and abilities, and send them into AFK combat! The decision is yours whether to engage in PVP or chat with guildmates.

Guides
Firestone: Online Idle RPG – Hidden Achievement List
List of the six hidden achievements. List of All Hidden Achievements Miner Clicker Dragon Clicker Inspection Hero inspection What lies behind the bush Background Story