How do I make progress? Edit
Early on, quick looting story dungeons gives a lot of team experience and helps unlock other game modes.
Later on, quick looting elite dungeons gives a consistent supply of hero shards.
Additionally, Arena and Events give Medals and Wings which can be used to buy hero shards or hero boxes.
How do I get event points (wings)? Edit
Event points can be earned from competing in events located under Play -> Events. Events require a team level of 12 to participate.