Rate top gamesFPS drops twice or thrice (mostly) after cities and stays like that until exiting the game. Had me drop the game.
The game itself gets tiring and repetitive after reaching third location.
Resources are scarce. And upgrading system is lame. You also don't know which essence stones (passive and active skills) there are in the game and which you'll find in the future. Making builds without seeing the whole picture is annoying.