Clear the active area
Use the equipped power and current upgrades; exact requirements are unknown.
Route file · evidence incomplete
Worlds and bosses
The official listing confirms that bosses unlock the next area and drop loot chests. A complete world-by-world boss table will stay unpublished until names and order are source-complete.
Defeat the area boss
The official description connects boss wins to the next area.
Open the loot chest
Boss chests provide packs according to the official listing.
Repeat with one stronger loop
Place spare cards, upgrade the bottleneck and move forward.