Boring old demons with no balancing. The new demons come with absurd skill and of course you have to spend alot of money for gems to summon said demons because the pull rate is horrible. Rarely updated and repeating PvE content with mediocre reward while you need tons of resources to upgrade demons. Heavily focused on PvP, dominated by new demons with absurd skill--no real strategy is needed. Lastly, constant error saying connection problem while my internet is working just fine.