they removed the gacha mechanic and the former gacha currency is now just a weird extra kind of currency (which I think they also hand out really generously)
lots of clicking in specific places that are pretty far away from the last specific place you clicked. technically you can do this with the controller... but only because you can move the mouse pointer around with the controller
Offline actually is balanced very differently since there's no PvP, among other reasons, but the remnants of it being a mobile game are definitely still there
I still play it on my phone because the touchscreen controls don't really bother me (it technically has controller support but I've never gotten it to work)
DiVE's premise of the player character literally just taking on the other characters' appearances and attributes in combat gave them an excuse for so many ridiculous character-weapon combinations