highscores shouldn't reset upon prestiging, and a boss is defeated again, it's highscore shouldn't update unless the new value is lower than the old one.
each dread level increase the cost of artifact, making the game harder and harder because all your gems earnings come from online production (because offline gem earning is broken) which is not increased when raising your dread level.
i returned to this game after a while, my raider are level 113 but i can't progress fast because they have no damage, farm monster regen too much hp, and my raider are so stupid they doesn't focus on a single monster, and sometime they just switch target when the one they were targeting was about to die.
I am aware of this bug and I am doing everything so that it is no longer present during the next version