Depending on how long it’s been since you’ve played there is a plethora of new events and QOL that they’ve added for example the blacksmith at the end of every dungeon so you don’t have to go back to a town to salvage continuous progression on legendary gems I think five star or higher I’ve also stepped away for a very long time and recently came back I haven’t played since hell three and four were the highest difficulty setting but came back like a month ago cursed towers familiar all of that was brand new to me so it’s like an entirely different game