The heroes will soon arrive in the world of the Keyholder. Everything is twisted there: hideous monsters resemble heroes and will attack the real heroes as they travel through portals, collecting portal keys. These keys are essential for treasure hunting in the Caves of Illusions. You can search through the entire cave or move on to the next one to try your luck there.

This time, the heroes will discover an Abandoned Mine, which they can explore using a pickaxe, a drill, and dynamite to extract additional resources.

Additionally, the heroes will encounter portal bosses, who will try to destroy them. In these battles, heroes can use special final strikes to eliminate the boss monsters.

To face a worthy opponent, upgrade your heroes and raise their ranks in the Temple, enhance their equipment and signature weapons, and choose the right pet to make your heroes stronger.  

The Keyholder in-game event will start soon after update 2.1.1 release.