It's the same activities and event types as a dozen other games before it.

Very fun game, easy to pass the time. Wish there was more to do sometimes, as I often complete all the daily tasks pretty quickly. The community is great and you can have a fulfilling game experience if you're willing to grind, you can also pay for stuff- but so far, everything you can buy in-game you can also earn in-game through quests

Lots and lots and lots of free rewards. Battles appear to be automated with no interaction from user. User creates teams, upgrades them and equips them. Try to get high rated heroes with good synergy for more powerful auto battles. It's okay play wise, but the art style imo is the best part. There's quite a few games like this but play this one because you like the art style and because you get more for free than other games of its type.

Gameplay is pretty fun. I don't like the heavy cash grab everywhere. Also wasn't getting daily sign-in credit for the event, which honestly put me off. You will want a decent amount of free time to enjoy the game fully.