Various Tips
Keep an eye on when you use certain rings since they all have different elements appropriate for different use.
Unlock one hero at a time. That way you'll have some time developing a hero and securing his future in the game. Don't send all the money in one stance. It's better to develope one hero first than start with new one.
Upgrading heroes is an essential part for any and every hero. Not only it improves their certain abilities but it also makes the stronger in battles.
Always keep in mind what is the cool down time for ability you are using. You don't want to get caught with pants down.
Remember this is a clicker game so it would be vise of you to use more than one finger.